Asus Z11PR-D16 User Manual page 55

20. Power Supply SMBus connector (5-pin PSUSMB1)
This connector allows you to connect SMBus (System Management Bus) to the PSU
(power supply unit) to read PSU information. Devices communicate with an SMBus
host and/or other SMBus devices using the SMBus interface.
This connector functions only when you enable BMC_EN1.
21. OCP LAN Activity LED connector (4-1 pin OCP_LED1)
OCP LAN LED connector supports OCP LAN card Active LED.
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