DFI LR102-B18D/B18S - Manual (Page 51)

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Hardware Installation
SMBus Connector
The SMBus (System Management Bus) connector is used to connect SMBus devices. It is a
multiple device bus that allows multiple chips to connect to the same bus and enable each one
to act as a master by initiating data transfer.
SMBus Connector
Pins
1
2
3
4
5
Function
3VSB
N.C.
SMBus CLK
SMBus Data
Ground