backplane

Hello everyone, I was recently gifted a MP5.1 mid 2010 and am a brand new MAC user. Running Mojave with a Radeon Sapphire RX580, 16 GB Ram. My Mac does not recognize any of the 4 Sata backplane ports on the logic board. The person who gifted it to me confirmed they were working. Mac OSX is...

I have an old Mac Pro 4,1 workhorse. It has the ATI Radeon HD 4870 PCIe video card, which occupies the lower two of the Mac Pro's four PCI slots. It tends to overheat in the summer and fail, so I'd like to install a Fox 2 exhaust / extractor fan above it. Looks like the intake of the fan will...

I have a Mid-2012 cMP (5,1, A1289 - 2629) that has a very strange problem (or maybe I just don't have enough information). It powers up but won't boot or drive the display. I have followed the Apple Service Manual's diagnostic procedures for this device but cannot narrow the problem down further...

Sorry to make my first post one asking for help... I have a 2010 Mac Pro which won't boot and I suspect either the PSU or the Backplane has failed. The symptom is that adding a power cord and pressing the power button does nothing. No noise, no clicks, no lights: nothing. I have followed the...

I have: 2010 Mac Pro 12-Core 2x 2.93ghz Westmere I’m not sure what backplane I need - and I can’t figure out how to take the current one out in order to verify it (yet) What model number do I need? 661-5706? 820-2337-A? Again: 2010 Mac Pro 12 Core 2x 2.93 Westmere

Can someone (please) direct me to a cMP (5,1) i/o architecture schematic I've seen somewhere on this site which will help me calculate maximum IO throughput ceilings as defined by the architecture and not the visible IO interface technologies (FW ports, SATA interfaces and PCIE slots) which I...

Hi, I have a Mac Pro that actually have a faulty second logic Board that have a circuit that was pulled off by mistake, it's working but makes cpu board fans running at full speed. Now according to the original board of the Mac Pro, that came with parts number: *J595100UJBH7A* 939-0459 CHINA &...

Hi guys. My Mac Pro early 2009 (8 core) had upgrade firmware from 4,1 to 5,1. (but the CPU is still E5520.) 2 month ago, the backplane board is not work (the backplane board shows "631-1009"). I would like to buy a new one from eBay. so, I have to buy a "631-1009" backplane board to replace the...