SuperMicro X10SRH-CF no PCI bifurcation in BIOS

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ekke

Member
Nov 16, 2015
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I got a SM X10SRH-CH. bios version 2.0b build date 04/14/2017

I seee no bifurcation in BIOS settings, does this mb not support bifurcation ? or do I need to upgrade the BIOS.
20240124_182738.jpg

20240124_182649.jpg

this is all there is under IIO COnfiguration

20240124_190156.jpg
 
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ekke

Member
Nov 16, 2015
166
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Solved by upgrading the BIOS.

NOw I just have to figure out which PCI port is which...
20240124_194847.jpg'

CAn auto work ? or do you need to set the split manually ?
 
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nexox

Well-Known Member
May 3, 2023
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NOw I just have to figure out which PCI port is which...
The block diagram in the manual should help with that. As far as whether Auto works, you probably have to test it with your specific hardware.
 

RolloZ170

Well-Known Member
Apr 24, 2016
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CAn auto work ? or do you need to set the split manually ?
if you have a SM AddOnCard auto can work yes.
check schematic in the manual:
PCIe Port 2 is 2A-D (ABCD=each 4 bits)
Slot5 2A(+2B)= x8
Slot6 2C(+2D)= x8

PCIe Port 3 is 3A-D (ABCD=each 4 bits)
Slot4 3A(+3B)= x8
Slot7 3C= x4
3D= LAN x4
with IIO1 PCIe Port 3 bif. to x4x4x4x4 Slot4 should be x4x4
 

ekke

Member
Nov 16, 2015
166
8
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Auto does not work, the top port, port 2 is the correct one for the x16 slot