MP All Models PCIe SSDs - NVMe & AHCI

[MisterAndrew]

This is a general info thread for blade SSDs that can be used in the Mac Pro. This is a WikiPost so anyone with the proper credentials may edit it.

NVMe SSDs can be used as a boot drive in the MP5,1 and MP6,1 with the latest firmware installed (beginning with version 140.0.0.0.0 for MP5,1 and MP61.0120.B00 for MP6,1). The new MP7,1 support booting from an NVMe SSD when external booting is enabled with Startup Security Utility.

Note that PCIe SSDs installed in a Mac Pro 5,1 (MP6,1 have exactly the same PCIe 2.0 limits too) are limited to ~1,500 MB/s unless installed on a PCIe switch card in slot 1 or 2 such as a HighPoint SSD7101A-1 or Amfeltec Squid that converts the Mac Pro PCIe 2.0 x16 to the PCIe 3.0 x4 needed for full throughput.

Also note that 3rd party SSDs have varying compatibility with the Mac Pro and not all listed below may be fully compatible.

macOS NVMe Support:​

• Genuine Apple NVMe drives are supported beginning with macOS Yosemite 10.10.2 with the correct firmware installed. 3rd party NVMe drives with 4096 bytes/sector are supported beginning with macOS Sierra with expanded support beginning with macOS High Sierra.
• macOS High Sierra, Mojave and Catalina supports both 4KiB and 512 bytes / sector NVMe drives.
• macOS Sierra supports 4KiB / sector drives like Apple OEM and some uncommon Toshiba/OCZ/Intel/WD blades. This post on InsanelyMac lists the blades that work with Sierra and hackintoshes, please note that most of those blades don't work with a Mac Pro at all or work with 750MB/s throughput only. Don't use this list to buy blades for a Mac Pro, it's linked here for information purposes only.
• For Sierra compatibility choose an NVMe blade that supports the 4Kn disk sector format. See 4Kn section below.
• Apple supports the 1.3 NVMe standard. Any blade that need a special NVMe module/driver won't be supported; seems that's the case with Samsung 970 EVO Plus without the firmware 2B2QEXM7 and some of the Plextor blades.
• To boot from a NVMe drive, for Mac Pro 5,1 you need to upgrade BootROM to at least 140.0.0.0.0, supplied with MAS Mojave full installers since 10.14.1. 10.14.4 has 141.0.0.0.0 and 10.14.5/10.14.6 have 144.0.0.0.0. For Mac Pro 6,1 you need to upgrade BootRom to at least MP61.0120.B00 included with macOS High Sierra 10.13.0.
• High Sierra boots/works perfectly both 4KiB and 512 bytes drives if you have MP5,1 BootROM 140/141/144.0.0.0.0.
• If you install MP5,1 BootROM 140/141/144.0.0.0.0, Sierra can boot from a 4KiB / sector NVMe M.2 blade.
• You can read about it on the first posts of these two threads:
  1. MP5,1: What you have to do to upgrade to Mojave
  2. MacPro5,1: BootROM thread

NVMe boot support and Mac Pro year models:
​

Mac Pro year model:	Model Identifier:	NVMe boot support:
2006 Mac Pro / Original Mac Pro	MacPro1,1	not possible, can't run Sierra/High Sierra. Native support for PCIe AHCI blades.
2007 Mac Pro / Mac Pro (8-Core)	MacPro2,1	not possible, can't run Sierra/High Sierra. Native support for PCIe AHCI blades.
Early 2008 Mac Pro	MacPro3,1	possible by loading NvmExpress driver via third party loaders such as OpenCore, RefindPlus/rEFInd etc (or after risky injection of NVMe EFI modules into the BootROM) and run 10.12/Newer*. Native support for PCIe AHCI blades.
Early 2009 Mac Pro	MacPro4,1	possible after replacing firmware with cross-flashed MacPro5,1 firmware (use or update to 144.0.0.0.0) or by loading NvmExpress driver via third party loaders such as OpenCore, RefindPlus/rEFInd etc and run 10.12/Newer*. Native support for PCIe AHCI blades.
Mid 2010 Mac Pro	MacPro5,1	upgrade to BootROM 140.0.0.0.0 or newer, current one is 144.0.0.0.0, and install 10.12/Newer* to have full native NVMe support.
Mid 2012 Mac Pro	MacPro5,1	upgrade to BootROM 140.0.0.0.0 or newer, current one is 144.0.0.0.0, and install 10.12/Newer* to have full native NVMe support.
Late 2013 Mac Pro	MacPro6,1	upgrade to BootROM MP61.0120.B00 or newer, current one from Monterey is 474.0.0.0.0, and install 10.12/Newer* to have full native NVMe support. Needs a 12+16 adapter to use standard M.2 blades.
2019 Mac Pro	MacPro7,1	native support, can boot from AHCI or NVMe blades/drives when external booting is enabled with Startup Security Utility.

* 10.12 only supports 4Kib / sector M.2 blades and U.2 drives while 10.13 and newer macOS releases supports both 4Kib /sector and 512 bytes / sector M.2 blades and U.2 drives.

What are internal storage for the Mac Pro firmware:
​

Mac Pro year model:	Model Identifier:	What Mac Pro firmware recognize as internal drives:
Mac Pro (2006)	MacPro1,1	SATA drives connected to the 6 southbridge SATA ports plus the two PATA drives connected to the PATA cable inside the ODD bay.
8-Core Mac Pro (2007)	MacPro2,1	SATA drives connected to the 6 southbridge SATA ports plus the two PATA drives connected to the PATA cable inside the ODD bay.
early-2008 Mac Pro	MacPro3,1	SATA drives connected to the 6 southbridge SATA ports plus the two PATA drives connected to the PATA cable inside the ODD bay.
early-2009 Mac Pro	MacPro4,1	SATA/SAS drives connected to the 4 southbridge SATA ports plus the two SATA drives connected to the SATA cable inside the ODD bay.
mid-2010 Mac Pro	MacPro5,1	SATA/SAS drives connected to the 4 southbridge SATA ports plus the two SATA drives connected to the SATA cable inside the ODD bay.
mid-2012 Mac Pro	MacPro5,1	SATA/SAS drives connected to the 4 southbridge SATA ports plus the two SATA drives connected to the SATA cable inside the ODD bay.
late-2013 Mac Pro	MacPro6,1	Only the 12+16 AppleOEM PCIe SSD is an internal drive.
2019 Mac Pro	MacPro7,1	Only the T2 Storage is an internal drive for T2 Security. While the two SATA ports of the logic board are internal for macOS, T2 Security definitions override macOS and you can only boot from SATA native ports with relaxed T2 Security, with external boot enabled with Startup Security Utility. Any PCIe connected storage are external for the firmware and T2 Security.

NVMe and AHCI Blades:
​

Apple SSDs: Proprietary Apple 12+16 pin to PCIe adapter needed for Mac Pro 5,1 & older and also 7,1. No adapter needed for Mac Pro 6,1. All Apple SSDs use 4KB sector size and have good compatibility.

Name	Interface	Tech	Sizes	Link	Speeds	Sector	Compatibility	Notes
SSUAX & SRIUP	AHCI	2D MLC	128GB, 256GB, 512GB, and 1TB	PCIe 2.0 x2 (128GB, 256GB, 512GB) PCIe 2.0 x4 (1TB)	~1,000 MB/s read ~800 MB/s write	4 KB	Good	Based on Samsung XP941 with UAX controller (S4LN053X01) and Toshiba with Marvell 88SS9183 controller
SSUBX	AHCI	2D MLC	128GB, 256GB, 512GB, and 1TB	PCIe 3.0 x4	~1,500 MB/s read ~1,425 MB/s write	4 KB	Good	Based on Samsung SM951 with UBX controller (S4LN058A01)
SSPOLARIS	NVMe	2D & 3D MLC or TLC	24GB, 32GB, 128GB, 256GB, 512GB, 1TB, and 2TB	PCIe 3.0 x4	~2,700 MB/s read ~2,350 MB/s write	4 KB	Good	Based on Samsung SM961 or PM961 with Polaris controller (S4LP077X01)
SSPHOTON	NVMe	48-layer MLC	32GB and ? (LPDDR4 DRAM)	PCIe 3.0 x2 ?	1,500 MB/s read, 900 MB/s write ?	4 KB	Good	Based on Samsung PM971 with Photon controller

Good article on Apple blade SSDs: The Ultimate Guide to Apple’s Proprietary SSDs

M.2 SSDs: M.2 PCIe adapter needed for Mac Pro 5,1 & 7,1. M.2 to proprietary Apple adapter needed for Mac Pro 6,1 or external Thunderbolt adapter.

Brand	Name	Interface	Tech	Sizes	Link	Speeds	Sector	4Kn	Compatibility	Notes
Samsung	XP941	AHCI	2D MLC	128GB, 256GB, and 512GB	PCIe 2.0 x2	~1,000 MB/s read ~800 MB/s write	512 B	Unknown	Good	UAX controller (S4LN053X01)
Samsung	SM951	AHCI & NVMe	2D MLC	128GB, 256GB, and 512GB	PCIe 3.0 x4	~2,150 MB/s read ~1,500 MB/s write	512 B	Unknown	Good	UBX controller (S4LN058A01) Datasheet (AHCI), Datasheet (NVMe)
Samsung	950 PRO	NVMe	3D MLC	256GB and 512GB	PCIe 3.0 x4	~2,500 MB/s read ~1,500 MB/s write	512 B	Unknown	Issues/not compatible	UBX controller (S4LN058A01) Datasheet
Samsung	PM961	NVMe	3D TLC	128GB, 256GB, 512GB, and 1TB	PCIe 3.0 x4	~3,000 MB/s read ~1,500 MB/s write	512 B	Unknown	Good	Polaris controller (S4LP077X01) Datasheet
Samsung	SM961	NVMe	2D & 3D MLC	128GB, 256GB, 512GB, and 1TB	PCIe 3.0 x4	~3,200 MB/s read ~1,800 MB/s write	512 B	Unknown	Good	Polaris controller (S4LP077X01) Datasheet
Samsung	960 EVO	NVMe	3D TLC	250GB, 500GB, and 1TB	PCIe 3.0 x4	~3,200 MB/s read ~1,900 MB/s write	512 B	Unknown	Good	Polaris controller (S4LP077X01) Datasheet
Samsung	960 PRO	NVMe	2D & 3D MLC	512GB, 1TB, and 2TB	PCIe 3.0 x4	~3,500 MB/s read ~2,100 MB/s write	512 B	Unknown	Good	Polaris controller (S4LP077X01) Datasheet
Samsung	PM981	NVMe	64-layer 3D TLC	256GB, 512GB, 1TB, and 2TB	PCIe 3.0 x4	~3,500 MB/s read ~2,400 MB/s write	512 B	Unknown	Issues/not compatible	Phoenix controller (S4LR020) Datasheet
Samsung	PM981a	NVMe	64-layer 3D TLC	256GB, 512GB, 1TB, and 2TB	PCIe 3.0 x4	~3,500 MB/s read ~2,400 MB/s write	512 B	Unknown	Issues/not compatible	Phoenix controller (S4LR020) Datasheet
Samsung	970 EVO	NVMe	96-layer 3D TLC	500GB and 1TB	PCIe 3.0 x4	~3,500 MB/s read ~2,500 MB/s write	512 B (emulated), 4 KB physical	Unknown	Good	Phoenix controller (S4LR020) Datasheet
Samsung	970 EVO+	NVMe	96-layer 3D TLC	250GB, 500GB, 1TB and 2TB	PCIe 3.0 x4	~3,500 MB/s read ~3,300 MB/s write	512 B (emulated), 4 KB physical	No	Requires at least firmware 2B2QEXM7 to work with macOS, all blades manufactured since September/October 2019 have the Mac Pro compatible firmware	Phoenix controller (S4LR020) Datasheet Not recommended for use in the Mac Pro 6,1 because it operates at a higher temperature than other NVMe blades. About 10-15 degrees C warmer than SK Hynix and Toshiba/KIOXIA NVMe blades.
Samsung	970 PRO	NVMe	64-layer 3D MLC	512GB and 1TB	PCIe 3.0 x4	~3,500 MB/s read ~3,000 MB/s write	512 B (emulated), 4 KB physical	Unknown	Good	Phoenix controller (S4LR020) Datasheet
Samsung	980	NVMe							Issues/not compatible	Firmware problems, incompatibility with PCIe v2.0, but works with PCIe v3.0 switched adapter
Samsung	980 PRO	NVMe							Issues/not compatible	Firmware problems, endurance problems, incompatibility with PCIe v2.0, but works with PCIe v3.0 switched adapter
Samsung	990 PRO	NVMe							Issues/not compatible	Firmware problems, endurance problems, incompatibility with PCIe v2.0, but works with PCIe v3.0 switched adapter
Intel	660p	NVMe	3D QLC	1TB	PCIe 3.0 x4			Unknown	Good	SM2263EN controller
Intel	Optane 900p	NVMe	3D XPoint	280GB and 480GB	PCIe 3.0 x4	~1,500 MB/s		Unknown	Good	Half Height Half Length (HHHL) Add-in-Card Datasheet
HP	EX920	NVMe	3D TLC	256GB, 512GB, 1TB, and 2TB	PCIe 3.0 x4	~3,200 MB/s read ~1,800 MB/s write		Unknown	Good	SM2262 controller Datasheet
HP	EX950	NVMe	3D TLC	512GB, 1TB, and 2TB	PCIe 3.0 x4	~3,500 MB/s read ~2,900 MB/s write		Unknown	Unknown (may have issues: see post #1,733)	Datasheet
Toshiba/KIOXIA	XG5	NVMe	64 layer BiCS3 3D TLC	256GB, 512GB, and 1TB	PCIe 3.0 x4	~3,000 MB/s read ~2,100 MB/s write	512 B (emulated), 4 KB physical	Yes	Good	TC58NCP090GSD controller Datasheet
Toshiba/KIOXIA	XG5-P	NVMe	64 layer BiCS3 3D TLC	1TB and 2TB	PCIe 3.0 x4	~3,000 MB/s read ~2,200 MB/s write	512 B (emulated), 4 KB physical	Yes	Good	TC58NCP090GSD controller Datasheet
Toshiba/KIOXIA	XG6	NVMe	96 layer BiCS4 3D TLC	256GB, 512GB, and 1TB	PCIe 3.0 x4	~3,180 MB/s read ~2,960 MB/s write	512 B (emulated), 4 KB physical	Yes	Good	TC58NCP090GSD controller Datasheet @zhpenn is using one with a MP7,1
Toshiba/KIOXIA	XG6-P	NVMe	96 layer BiCS4 3D TLC	2TB	PCIe 3.0 x4	~3,180 MB/s read ~2,920 MB/s write	512 B (emulated), 4 KB physical	Yes	Good	TC58NCP090GSD controller Datasheet
SanDisk	Ultra 3D	NVMe	96 layer 3D TLC	250GB, 500GB, 1TB	PCIe 3.0 x4	~2400 MB/s read ~1950 MB/s write		Unknown	Issues/not compatible (don't work from cold boot/sleep issues/KPs)	rebadge of WD SN550 with same controller and firmware Sandisk / Controller DRAM less Datasheet
Western Digital	WD Black	NVMe	3D TLC	250GB, 500GB, 1TB	PCIe 3.0 x4	~ MB/s read ~ MB/s write		Unknown	Unknown	Datasheet
Western Digial	WD Blue SN550	NVMe	96 layer 3D TLC	250GB, 500GB, 1TB	PCIe 3.0 x4	~2400 MB/s read ~1950 MB/s write		Unknown	Issues/not compatible (don't work from cold boot/sleep issues/KPs)	Controller DRAM less Datasheet
Western Digial	WD Blue SN570	NVMe	96 layer 3D TLC	250GB, 500GB, 1TB, 2TB	PCIe 3.0 x4	~3500 MB/s read ~1950 MB/s write		Unknown	Issues/not compatible (don't work from cold boot/sleep issues/KPs), not detected with MacPro6,1	Controller DRAM less Datasheet
Western Digital	WD Black SN750	NVMe	64-layer 3D TLC	250GB, 500GB, 1TB, 2TB	PCIe 3.0 x4	~3400 MB/s read ~2900 MB/s write		Unknown	Good	Datasheet
Western Digital	WD Black SN770	NVMe 1.4	112-layer 3D TLC	250GB, 500GB, 1TB, 2TB	PCIe 4.0 x4	~5150 MB/s read ~4850 MB/s write		Unknown	Issues/not compatible (multiple reports of KPs when in high load, only works at 2,5GT/s with slots 3 and 4) Working OK in MP 6.1 report Do not buy it for a MacPro5,1 without a PCIe switched adapter.	DRAM-less
Sabrent	Rocket	NVMe	Toshiba 3D TLC	256GB, 512GB, 1TB, 2TB, and 4TB	PCIe 3.0 x4	~3,450 MB/s read ~3,000 MB/s write	512 B (emulated), 4 KB physical	Yes	Good	Phison E12 or E16 controller Datasheet
Sabrent	Rocket Q	NVMe	Micron 96L 3D QLC	500GB, 1TB, 2TB, 4TB, and 8TB	PCIe 3.0 x4	~3,400 MB/s read ~3,000 MB/s write	512 B (emulated), 4 KB physical	Yes	Good	Phison E12S controller Datasheet
SK Hynix	PC401	NVMe		256GB, 512GB, and 1TB		~2,700 MB/s read ~1,450 MB/s write	512 B (emulated), 4 KB physical	Yes	Unknown
SK Hynix	PC601	NVMe		256GB, 512GB, and 1TB		~3,400 MB/s read ~2,500 MB/s write	Unknown (most likely 512 B (emulated), 4 KB physical)	Unknown (most likely yes)	Unknown
SK Hynix	Gold P31	NVMe	128 layer 4D NAND	500GB, 1TB, and 2TB		~3,200 MB/s read ~3,200 MB/s write	512 B (emulated), 4 KB physical	Yes	Good (requires latest firmware)	SK Hynix controller
ADATA	XPG SX8200 Pro	NVMe		256GB, 512GB, 1TB, and 2TB		~3,500 MB/s read ~3,000 MB/s write	4 KB	-	Good	Datasheet
Crucial	P5	NVMe		250GB, 500GB, 1TB, and 2TB		~3,400 MB/s read ~3,000 MB/s write	Unknown	Unknown	Caution (This user reports it working well in a MacBook Pro, while this user reports it is not.)	Datasheet
Crucial	P3	NVME		2TB			Unknown	Unknown	Good	Works in MP5.1
Mushkin	Helix-L	NVMe		120GB, 250GB, 500GB, 960GB, 1TB		~2,100 MB/s read ~1,700 MB/s write	Unknown	Unknown	Good	SMI SM2263XT controller
Corsair	MP400	NVMe	Micron 96 layer QLC	1TB, 2TB, 4TB, 8TB	PCIe 3.0	~3480 Mbps read ~3000 Mbps write	Unknown	Unknown	Good	Phison E125 controller depending on blade size, from random 190 000 read to random 710 000 write

Recommended PCIe adaptors for Mac Pro 5,1 & 7,1:

Standard PCIe x4 cards (tops at 1500 MB/s with MP5,1, double with MP7,1)(no switch):​

Low cost:

Be warned, don't use AHCI and NVMe blades without having a heatsink installed, you will have thermal throttling frequently and may cook your blade.

• RIITOP M.2 NVMe to PCIe Adapter [M2TPCE16X] with HEAT SINK - operates at PCIe x4 but keyed to fit 4x/8x/16x slot - good for low cost NVMe M.2 upgrade where PCIe x4 speed is sufficient, low profile does not impede GPU air cooling if used in slot 2
• Lycom DT-120
• Micro Connectors M.2 NVMe + M.2 SATA 80mm SSD PCIe x4 Adapter with Heat Sink - Model PCIE-M20802HS (only the M.2 NVMe slot has been tested)
• For proprietary 12+16 Apple SSDs (usually Apple blades used on Macs from 2013~2015): generic adapter from eBay (e.g. "2013-2014 Macbook Air SSD PCIe adapter 4X") (no brand)

Medium cost:

All adapters have heatsinks.

• Angelbirds Wings PX1 (officially discontinued in February 2019, prices from 3rd party resellers are starting to soar).
• Aqua Computer kryoM.2 - original model, without the heatsink for the underside of the blade that EVO model has. This model supports both single and doubled sided blades.
• Aqua Computer kryoM.2 evo thread Aqua Computer kryoM.2 evo PCIe 3.0 x 4, adapter. This model supports only single sided blades. If you don't install the second heatsink, at the back of the PCB, you can use double sided blades.
• Wolftech pulsecard - made by Angelbird for Wolftech, it's exactly the same as Wings PX1, but without the LED illumination.

PCIe x8 & x16 switch cards (up to ~6200MB/s with MP5,1, double with MP7,1):​

Better performance / higher cost (up to 3,000 MB/s with MP5,1, double with MP7,1), tested in the thread:

• IO Crest IO-PCE2824-TM2 (aka Syba SI-PEX40129): Supports 2 blade SSDs. Uses ASMedia x8 ASM2824 switch. Heatsink with a fan over the blades and PCIe switch. Up to 2900MB/s with MP5,1 and a little less than 6000MB/s total throughput with MP7,1. Warning: several recent posts ( #2,146 , #2,204 ) that recently I/O Crest cards are freezing with MP5,1. Seems newer cards are now incompatible.
• OWC ACCELSIOR 4M2 Supports four (seems to require single side M.2 blades, to be confirmed) 80mm M.2 blades. Uses x8 ASMedia ASM2824 switch. Heatsink over the blades and PCIe switch. It's a PCIe 3.0 x8 card, ~2900MB/s with MP5,1 PCIe 2.0 slot1 and slot2 and double that with MP7,1 PCIe 3.0 slots. Several reports that the original version have problems with 2019 Mac Pro and only the revised version works with MP7,1.
• Ableconn PEXM2-130: dual-blade ASM2824 switch. Runs without a fan, needs discrete heatsinks for each blade. Boots MacOS and Windows, up to 3000 MB/s with MP5,1.

Top performance / high cost [tops at 3200 MB/s with one blade, 6200 MB/s (10000~120000 MB/s for MP7,1) with two to four], all tested in the thread:

• Amfeltec Squid: Amfeltec x16 PCIe with 4 SSDs: 5900+ MB/s. Supports four double side M.2 blades, up to 110mm. The PCI Express Gen 3 version uses PLX PEX8732 switch. Just a heatsink and fan for the PCIe switch, no heatsink for the blades. The Gen 2 version doesn't have a fan and doesn't allow full speed from individual Gen 3 SSDs.
• Amfeltec Squid PCI Express Gen 3 Carrier Board for 6 M.2 or NGFSS (NF1) SKU-086-36 Supports six double side M.2 blades, up to 110mm, 32mm wide. Uses x16 PLX PEX87xx switch? Just a heatsink for the PCIe switch, two fans for the blades. Link for the manual: Squid PCIe Gen 3 Carrier BoardTM for six M.2 / NGSFF(NF1) SSD modules (SKU-086-36). Works with MP5,1 and MP7,1.
• HighPoint SSD7101A-1: Highpoint 7101A - PCIe 3.0 SSD performance for the cMP. Supports four double side M.2 blades, up to 110mm. Uses PLX PEX8747 switch. Heatsink with a fan over the blades and PCIe switch. This card can boot Windows when using NVMe blades and UEFI install.
• Sonnet M.2 4x4 PCIe Card FUS-SSD-4X4-E3: Supports four single sided 80mm M.2 blades. Uses x16 PLX PEX8747 switch. Heatsink with a fan over the blades and PCIe switch. Needs a GPU with pre-boot configuration support. Almost too big to fit MP5,1 length wise. Do not buy it if you need to boot Windows from the blades or will upgrade to a PC later; this card can't boot Windows. Sonnet has a support document about what major blades are single and double sided:
  https://sonnettech.com/support/downloads/manuals/M2_compatibility.pdf

Product	Unique	PCIe	Lanes	Chipset	Boot	M.2 Sockets	Speed MB/s
Amfeltec Squid SKU-086-34	Has offset PCI Slot 2 cMP5,1	Gen 3 x4/x8 PCIe 2.1	32	PLX PEX8732	✅	4x NVME M2 1.0 2210 2280 2260 2242 2230	5900+
Amfeltec Squid SKU-086-36	Has offset PCI Slot 2 cMP5,1 aux Power	Gen 3 x16 x4/x8Optional Gen 3 x8 PCIe 2.1		unknown	unknown	6x 110mm NVME M2 1.1 2210 2280
HighPoint SSD7101A-1			48	PLX PEX8747	✅ W ✅	4x NVME M2
Sonnet FUS-SSD-4X4-E3	Long			PLX PEX8747	✅ W ⛔

Untested in the thread yet, but should work:

• Amfeltec Squid PCI Express Gen 3 Carrier Board for 2 M.2 or NGFSS (NF1) SKU-086-32: Supports two double side M.2 blades, up to 110mm, 32mm wide. Uses a x8 PLX PEX87xx switch? Just a heatsink for the PCIe switch, one fan for the blades. Very cost effective. Link for the manual Squid PCI Express Gen3 Carrier BoardTM for 2 M.2 SSD modules. Untested in the Mac Pro.
• HighPoint SSD7140: Supports eight PCIe Gen 3 M.2 blades.
• HighPoint SSD7180: Supports eight PCIe Gen 3 U.2 devices.
• HighPoint SSD7184: Supports eight PCIe Gen 3 x4 devices (four U.2 and four external PCIe).
• HighPoint SSD7505: Supports four PCIe Gen 4 M.2 blades.
• HighPoint SSD7540: Supports eight PCIe Gen 4 M.2 blades.
• HighPoint SSD7580: Supports eight PCIe Gen 4 U.2 devices.
• Liqid Element LQD4500: Supports eight PCIe Gen 4 M.2 blades. Requires 6-pin PCIe power. Although Macs don't have PCIe Gen 4 yet, the card has a PCIe Gen 4 switch that should allow max performance from two or three Gen 4 NVMe devices. I don't think you can get a LQD4500 without M.2 devices already installed?

Recommended M.2 to Apple 12+16 pin adapters for Mac Pro 6,1:
​

• Sintech ST-NGFF2013-C: Supports one M.2 blade​
• Amfeltec AngelShark Carrier Board™ for M.2 SSD modules: Supports two M.2 blades plus one Apple 12+16 pin blade, or three M.2 blades using a single 12+16 pin adapter on the board. Note: All SSDs installed on the carrier board are seen as external by the Mac Pro, even the original Apple SSD. It must be removed to update the system firmware (boot ROM). ​

Don't buy PCIe adapters list:​

Any multiple M.2 blades card from ASRock/Asus/Gigabyte/MSI that don't have a PCIe 3.0 switch and requires a motherboard with PCI Express Lane Partitioning support, also known as bifurcation support, like the cards listed on the table below.

It's confirmed that off MP7,1 PCIe slots, just the two MPX ones are connected to the CPU and the rest are behind a 96-lane PEX8796 PCIe switch, so no PCI Express Lane Partitioning support for 2019 Mac Pro, and the same requirements for PCIe M.2/U.2 adapters as MP5,1 are valid, the only difference is that 2019 Mac Pro slots are PCIe 3.0.

Being crystal clear, 2019 Mac Pro doesn't support the cheap multiple M.2 adapters that require motherboard bifurcation support and only the first blade of the four is recognized. While MP7,1 has a chipset compatible with lane bifurcation, no Mac has the firmware or the configuration options necessary for it to work.

No blade works when the cards that require PCI Express Lane Partitioning support of the table below are installed on a MP5,1, the chipset is too old and don't support it at all.

Adapter:	Impediment for not working:	Issues:
ADWITS Quad M.2	bad design, requires MOLEX or SATA power even with 1 blade. @combatphotog bought one and tested, card keeps shutting down his MP5,1.	Power via Molex
Aplicata Quad M.2 NVMe SSD PCIe x16 Adapter	requires motherboard PCI Express Lane Partitioning support (aka bifurcation)	PCIe Bifurcation
ASRock Ultra Quad	requires motherboard PCI Express Lane Partitioning support (aka bifurcation)	PCIe Bifurcation
Asus Hyper M.2 x16 Asus Hyper M.2 x16 v2 Asus Hyper M.2 x16 Gen 4	requires motherboard PCI Express Lane Partitioning support (aka bifurcation). Confirmed working for one blade, not working for more than one.	PCIe Bifurcation ASUS Support Note
CEACENT ANM22PE08 NVMe Controller PCIe 3.0 x8 to M.2 Dualport with heatsink	requires motherboard PCI Express Lane Partitioning support (aka bifurcation)	PCIe Bifurcation
Dell Ultra-Speed Drive Quad NVMe M.2 PCIe x16 Card	requires motherboard PCI Express Lane Partitioning support (aka bifurcation)	PCIe Bifurcation
GIGABYTE AORUS PCIE x16 M.2 GIGABYTE AORUS Gen4 AIC Adaptor GC-4XM2G4	requires motherboard PCI Express Lane Partitioning support (aka bifurcation)	PCIe Bifurcation
GIGABYTE CMT2014, CMT4032 and CMT4034	requires motherboard PCI Express Lane Partitioning support (aka bifurcation)	PCIe Bifurcation
HP Z Turbo Drive Quad Pro	requires motherboard PCI Express Lane Partitioning support (aka bifurcation)	PCIe Bifurcation
MSI Xpander-Aero	requires motherboard PCI Express Lane Partitioning support (aka bifurcation)	PCIe Bifurcation
Squid PCIe Gen 3 Carrier Board for 4 M.2 SSD modules (M-key ) (full or half-height bracket) SKU-086-B4	requires motherboard PCI Express Lane Partitioning support (aka bifurcation)	PCIe Bifurcation
Supermicro AOC-SLG3-2M2	requires motherboard PCI Express Lane Partitioning support (aka bifurcation)	PCIe Bifurcation
Supermicro AOC-SLG3-8E2P	fried @handheldgames Mac Pro	⛔
Synology M2D18	it's a ~$200 PCIe 2.0 switch card with SATA + M2 that tops at 1500MB/s

4Kn Disk Sector Format
​

For best compatibility convert your 4Kn capable NVMe blade to the 4K Native disk sector format like a genuine Apple SSD. This is required for macOS Sierra and optional for newer macOS releases. Wiki article on this format. Many recent NVMe blades support 4Kn, however, you must verify if your NVMe blade supports it before converting it. How to section is below.

Note the following warnings:

• Converting your NVMe blade to 4Kn will result in loss of all data currently on the drive.
• Attempting to convert an NVMe blade to 4Kn that does not support it will probably ruin it.
• Convert an NVMe blade to 4Kn at your own risk.

How to convert your 4Kn capable NVMe:

• Make sure the NVMe blade's firmware is up to date. You will probably have to do this in Windows. For example, firmware updates for Toshiba/KIOXIA SSDs are available from Dell. Choose a new Dell PC such as the Precision 7920 Tower in the support section to find the firmware update for your SSD. Find the model number of your SSD in the Windows Device Manager.​
• If Windows can identify your NVMe blade and has assigned a drive letter then you can use the command prompt to see if your NVMe blade is 4Kn capable. Run Command Prompt as an Administrator. For example, if your drive is letter E you would type fsutil fsinfo sectorInfo E:. If the PhysicalBytesPerSector value is 4096 then your NVMe blade is 4Kn capable. If the LogicalBytesPerSector value is 4096 then it is already in 4Kn format. If the LogicalBytesPerSector value is 512 then it is currently in 512e format (emulated 512 bytes per sector). If your NVMe blade's firmware will allow it you can convert it to 4Kn.​
• Check to see if there is a sector size conversion app available from your SSD's manufacturer. For example, Sabrent has an app to do this in Windows. Link for Sabrent’s Sector Size Converter (SSC). Intel has firmware and an app that achieve this for some of their SSDs: link.​

If there is no firmware or app available from the manufacturer then follow the directions below to convert it manually.

1. Make a bootable Linux flash drive such as Ubuntu following one of the various guides online.​
2. Boot from the Linux drive and enter try/live mode.​
3. Make sure the internet is connected. For example, select your WiFi network in the upper right corner of the screen.​
4. Open the Linux disk utility app (such as Gparted) to find the device path and name for your NVMe blade​
5. Open the Terminal app​
6. Install the NVMe-CLI app: (make sure the top 4 package sources are selected in the Ubuntu software update app)​
   • Ubuntu: sudo apt-get install -y nvme-cli​
   • CentOS/RHEL 7.x or 8.x: sudo yum install nvme-cli​
7. Check which disk sector size formats your NVMe blade supports (important!): For example: sudo nvme id-ns /dev/nvme0n1 -n 1 -H |grep “LBA Format”​
8. Note the LBA number corresponding to the 4Kn format (4096 bytes). Note: If there is no 4096 byte LBA number listed then your NVMe blade is not 4Kn capable! Do not proceed!​
9. Format the NVMe blade referencing the correct LBA number. For example, if the correct LBA number is 1: sudo nvme format /dev/nvme0n1 -l 1​
10. That's it. You successfully converted your NVMe blade to the 4Kn disk sector format. If you want you can verify it by entering the command from step 6 again to find the LBA number. It will show "in use" by the 4096 bytes LBA number. The drive can then be formatted with the macOS Disk Utility to HFS+ or APFS.​

More info on the open source NVMe-CLI app.
https://nvmexpress.org/open-source-nvme-management-utility-nvme-command-line-interface-nvme-cli/

 

[tsialex]

Just to remember:

Samsung 950PRO 512GB is NOT compatible with Mac Pro as a boot disk, only as a data/scratch one. Not even with the most recent firmware (2B0QBXX7).

The 950PRO incompatibility to MP5,1 is so weird that if I do clear the NVRAM, I have to remove the PCIe adaptor from the Mac or I can't boot from the other disks. If you set another disk as the boot drive, the 950PRO can be used as a data drive - until you need to clear NVRAM…

Another thing, if the 950PRO is installed, boot picker stops working, just a white screen - and that happens even if you don't have the NVMe EFI module injected.

 

[meanmean]

Just to remember: Samsung 950PRO is NOT compatible with Mac Pro. Not even with the most recent firmware.

To clarify the point, the 950 Pro does work with the NVMe patch on 139, as I'm currently running Mojave with it. But does not seem to work on 140.

 

[MIKX]

Might be a good idea to mention the differences between Sierra 4kb and High Sierra 512 kb sectors.
My Samsung M.2 960EVO & 970 EVO are not seen in Sierra but are OK & bootable in High Sierra 10.13.6 with the '89 bootrom.

 

[MisterAndrew]

Just to remember: Samsung 950PRO is NOT compatible with Mac Pro. Not even with the most recent firmware.

Okay, thanks. Does that mean the SM951-NVMe is also not compatible?
[doublepost=1539135278][/doublepost]

Might be a good idea to mention the differences between Sierra 4kb and High Sierra 256 kb sectors.
My Samsung M.2 960EVO & 970 EVO are not seen in Sierra but are OK & bootable in High Sierra 10.13.6 with the '89 bootrom.

Thanks. Can you explain that more? Do the Polaris SSDs and newer have 256 kB sectors and older SSDs have 4 kB sectors?

 

[w1z]

Just a quick note on the 970 Pro 1TB blade running on the SSD7101A - The max write speed I was able to achieve was 3014MB/s

This is with filevault enabled.



Reads fluctuate from 3000MB/s to 3530MB/s but writes are mostly consistent.

 

[MIKX]

Okay, thanks. Does that mean the SM951-NVMe is also not compatible?
[doublepost=1539135278][/doublepost]

Thanks. Can you explain that more? Do the Polaris SSDs and newer have 256 kB sectors and older SSDs have 4 kB sectors?

It's just a fact of Sierra. I managed to get my 960 EVO "seen" in Sierra but it was a hassle . . then i set the EVO up with a USB stick in a Fusion setup to do a " kind of " NVMeM.2 boot. But still Sierra cannot natively "see" 256kb sector blades.

 

[MisterAndrew]

It's just a fact of Sierra. I managed to get my 960 EVO "seen" in Sierra but it was a hassle . . then i set the EVO up with a USB stick in a Fusion setup to do a " kind of " NVMeM.2 boot. But still Sierra cannot natively "see" 256kb sector blades.

I was asking which blades have 256kb sectors. That info appears to be missing from the datasheets.

 

[tsialex]

Might be a good idea to mention the differences between Sierra 4kb and High Sierra 256 kb sectors.
My Samsung M.2 960EVO & 970 EVO are not seen in Sierra but are OK & bootable in High Sierra 10.13.6 with the '89 bootrom.

You are mistaken, there's not 256KB sectors.

There's two sectorizations, the old 512 bytes per sector and new 4Kbytes per sector.
[doublepost=1539149698][/doublepost]

Okay, thanks. Does that mean the SM951-NVMe is also not compatible?

I can confirm that the 512GB 950PRO don't work, have one here right now. I can't say about the SM951-NVMe - I'll have one to test later this month.

 

[MIKX]

You are mistaken, there's not 256KB sectors.

There's two sectorizations, the old 512 bytes per sector and new 4Kbytes per sector.
[doublepost=1539149698][/doublepost]
I can confirm that the 512GB 950PRO don't work, have one here right now. I can't say about the SM951-NVMe - I'll have one to test later this month.

Sorry tsialex .. you are correct 512kb . . I didn't get much sleep last night, I was up 'til 2:30 am PMing with you

 

[tsialex]

Edit: added all info into post #2.

 

[turluttu]

Please tell me why my Plextor does not want to work? Could this be due to the HHHL form factor, not M.2.

 

[tsialex]

Please tell me why my Plextor does not want to work? Could this be due to the HHHL form factor, not M.2.
View attachment 793695 View attachment 793694 View attachment 793696

Usually if the SSD don't show into NVMExpress tab, it's incompatible. Did you have the most current firmware? Did you asked Plextor for more info?

 

[turluttu]

Usually if the SSD don't show into NVMExpress tab, it's incompatible. Did you have the most current firmware? Did you asked Plextor for more info?

On the manufacturer's website there is a new firmware for this disk, version 1.03. My disk has firmware 1.01. Do you think this may affect work?

 

[tsialex]

On the manufacturer's website there is a new firmware for this disk, version 1.03. My disk has firmware 1.01. Do you think this may affect work?

Install the most recent firmware is the first thing that you do when troubleshooting.

 

[h9826790]

For easy access to this thread. I put that into the sticky 4,1/5,1 upgrade post, under the Storage section, and label it as "Summary of PCIe SSDs"

 

[Theophany]

Is there any good resource for finding M.2 add in boards that will work with MacOS?

I was looking at this StarTech board as it seems like it could provide an inexpensive way to get hardware RAID 0 for a pair of NVMe drives to use as a boot disk: https://www.startech.com/uk/Cards-A...TA-Cards/m2-raid-controller-card~PEXM2SAT3422

Specification says it works with MacOS 10.14 - but I'm not sure how you'd configure the RAID array?

 

[h9826790]

Is there any good resource for finding M.2 add in boards that will work with MacOS?

I was looking at this StarTech board as it seems like it could provide an inexpensive way to get hardware RAID 0 for a pair of NVMe drives to use as a boot disk: https://www.startech.com/uk/Cards-A...TA-Cards/m2-raid-controller-card~PEXM2SAT3422

Specification says it works with MacOS 10.14 - but I'm not sure how you'd configure the RAID array?

This card is NOT for PCIe SSD at all.

You better avoid the term "m.2", this is the form factor, not the connection standard / protocol.

 

[turluttu]

Install the most recent firmware is the first thing that you do when troubleshooting.

Updated firmware, no results

 

[tsialex]

Updated firmware, no results

Since Plextor don't support Macs with this model, maybe it's better to replace it with another one compatible.

 

[turluttu]

Since Plextor don't support Macs with this model, maybe it's better to replace it with another one compatible.

View attachment 793739

What speed can I get on the Samsung 970 Pro with this adapter? Thanks.

 

[tsialex]

What speed can I get on the Samsung 970 Pro with this adapter? Thanks.

Any adapter without a PCIe PLX switch will get a maximum 1500MB/s throughput, read the first post.

 

[TheStork]

Any adapter without a PCIe PLX switch will get a maximum 1500MB/s throughput, read the first post.

Are the two NVMe M.2 SSD adapter cards mentioned in Post #1 the only adapter cards with PLX? (I bought an Angelbird Wing PCIe NVMe M.2 adapter card from all the recommendations in the Mac Pro forum section.)

 

[tsialex]

Are the two NVMe M.2 SSD adapter cards mentioned in Post #1 the only adapter cards with PLX? (I bought an Angelbird Wing PCIe NVMe M.2 adapter card from all the recommendations in the Mac Pro forum section.)

At the moment, it's the only two confirmed working on a Mac Pro. Other cards with ASM2824 PCI-Express 3.0 x24 switch could work, but someone has to buy one and test it for the rest of us

This is a good candidate:

SYBA Dual M.2 NVMe Ports to PCIe 3.0 x16 Bifurcation Riser Controller - Support Non-BiFurcation Motherboard, SI-PEX40129

 

[TheStork]

At the moment, it's the only two confirmed working on a Mac Pro. Other cards with ASM2824 PCI-Express 3.0 x24 switch could work, but someone has to buy one and test it for the rest of us

This is a good candidate:

SYBA Dual M.2 NVMe Ports to PCIe 3.0 x16 Bifurcation Riser Controller - Support Non-BiFurcation Motherboard, SI-PEX40129

Those Post #1 cards are very expensive for the performance. They must be targeted to users of NVMe M.2 SSD RAID. For single NVMe M.2 SSD, the Angelbird Wings PCIe adapter is probably good enough (bang for the buck) at $60 USD.