Intel SERVER BOARD SDS2 - Manual (Page 88)

Connections Intel® Server Board SDS2
Revision 1.2
Order Number: A85874-002
74
8. Connections
8.1 Power Distribution Board Connector
The main power supply connection is obtained using a 24-pin connector. A separate 8-pin
connector is used for the +12 V power connector dedicated to providing power to the processor.
A third 5-pin auxiliary signal connector is used to communicate with the power supply. The
following tables define the pin-outs of these connectors.
Table 52. 24-Pin Main Power Connector Pin-out
Pin Signal Color Pin Signal Color
1 +3.3 V Orange 13 +3.3 V Orange
2 +3.3 V Orange 14 -12 V Blue
3 COM Black 15 COM Black
4 +5 V Red 16 PS_ON# Green
5 COM Black 17 COM Black
6 +5 V Red 18 COM Black
7 COM Black 19 COM Black
8 PWR_OK Gray 20 RSVD_(-5 V) White
9 5 VSB Purple 21 +5 V Red
10 +12 V_IO Yellow 22 +5 V Red
11 +12 V_IO Yellow 23 +5 V Red
12 +3.3 V Orange 24 COM Black
Table 53. 8-Pin +12 V Power Connector Pin-out
Pin Signal Color Pin Signal Color
1 COM_CPU Black 5 +12V_CPU Yellow
2 COM_CPU Black 6 +12V_CPU Yellow
3 COM_CPU Black 7 +12V_CPU Yellow
4 COM_CPU Black 8 +12V_CPU Yellow
Note: The SDS2 server board requires a +12 V Power Connector. The board will not power on
without +12 V Power supplied to this connector.
Table 54. Aux Signal Connector Pin-out
Pin Signal Name
1 I2C Clock
2 I2C Data