ASROCK WRX90 WS EVO User Manual page 59

Intelligent Platform Management Bus Header
(4-pin IPMB1) (see p.6, No. 45)
This 4-pin connector is used to provide a cabled base-board or front panel connection for
value added features and 3rd-party add-in cards, such as Emergency Management cards,
that provide management features using the IPMB.
WRX90 WS EVO
IPMB1
IPMB_SDA
IPMB_SCL
GND
No Connect
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