55
Chapter 4: Motherboard Connections
Chapter 4
Motherboard Connections
This section describes the connections on the motherboard and provides pinout definitions.
Note that depending on how the system is configured, not all connections are required. The
LEDs on the motherboard are also described here. A serverboard layout indicating component
locations may be found in Chapter 1.
Please review the Safety Precautions in Appendix B before installing or removing components.
4.1 Power Connections
Main ATX Power
The power supply modules plug directly into the motherboard, so there is no cable connection
that needs to be made for main power.
GPU Power Headers
Connect to JPWR1–JPWR4 to provide 12V DC power for the GPUs.
GPU Power
Pin Definitions
Pin#
Definition
1 - 4 Ground
5 - 8 +12V