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OCuLink Connector
(OCU1)
USB 3.2 Gen1 Header
(19-pin USB3_5_6)
System Fan Connectors
(4-pin FAN1)
(4-pin FAN2)
(4-pin FAN3)
Intelligent Platform
Management Bus Header
(4-pin IPMB1)
O CU1
O CU2
IntA_P_D +
IntA_P_D -
GN D
IntA_P_SSTX+
IntA_P_SSTX-
GN D
IntA_P_SSRX +
IntA_P_SSRX -
Vbu s
Vbu s
IntA_P_SSRX -
IntA_P_SSRX +
GN D
IntA_P_SSTX-
IntA_P_SSTX+
IntA_P_D -
FAN_SPEED
FAN_VOLTAGE_CONTROL
FAN_SPEED_CONTROL
GND
IPMB_SDA
IPMB_SCL
GND
No Connect
Please connect an OCulink-
to-SATA x4 cable to the
connector.
ID
There is one USB 3.2 Gen1
header on this motherboard.
This USB 3.2 Gen1 header
can support two USB 3.2 Gen1
ports.
1
GN D
IntA_P_D +
Please connect fan cables to the
fan connector and match the
black wire to the ground pin.
All fans support Fan Control.
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,
t h a t p r o v i d e m a n a g e m e n t
features using the IPMB.
B550D4ID Series
37
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