Chapter 2 — Installing Hardware
Replacing the Motherboard
In order to remove the motherboard, you need to disconnect all connections between the motherboard and compo-
nents in the case and any cables that are simply in the way.
Important!
When removing any component, wear a properly grounded static strap to prevent static discharge.
Follow these instructions to replace the motherboard:
1.
2.
3.
4.
5.
6.
7.
8.
9.
Unplug the power supply.
Remove the chassis cover. See Removing the Chassis Cover on page 5.
Remove all installed memory. See Installing Memory on page 12.
Remove the PCI riser card assembly. See Replacing the Riser Card on page 19.
Remove the heat sinks from the chassis. See Installing Heat Sinks on page 9.
Remove the CPU(s) from the chassis. See Installing CPUs on page 7.
Disconnect the power, IPMB, SATA, front panel, and mainboard cable connectors from the motherboard.
See QSSC-S99K 2U Mainboard Components on page 2.
Remove the ten (10) screws securing the mainboard in place.
Lift the mainboard out of the chassis in the direction of the arrow, front edge first, to clear the I/O ports.
10. When replacing the mainboard, align holes A and B to position the mainboard correctly in the chassis.
11. Replace the ten (10) screws to secure the motherboard in place.
12. Reconnect the power, IPMB, SATA, front panel, and mainboard connectors to the mainboard. See QSSC-S99K
2U
Mainboard Components on page 2.
13. Replace all removed components.
14. Replace the chassis cover. See Replacing the Chassis Cover on page 22.
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