Connectors; Main Power Connector; Table 17. Power Connector Pin-Out (Cn4H1); Table 18. Auxiliary Cpu Power Connector Pin-Out (Cn4B1) - Intel SE7221BK1LX Technical Manual

7.

Connectors

7.1

Main Power Connector

The main power supply connection is obtained using the 24-pin connector. The following table
defines the pin-outs of the connector.
Pin Signal
1* +3.3VDC
3.3V RS
2 +3.3VDC
3* COM
COM RS
4* +5VDC
5V RS
5 COM
6 +5VDC
7 COM
8 PWR OK
9 5 VSB
10 +12V3
11 +12V3
12 +3.3VDC

Table 18. Auxiliary CPU Power Connector Pin-out (CN4B1)

Pin Signal
1 COM
2 COM
3 COM
4 COM
26

Table 17. Power Connector Pin-out (CN4H1)

18 AWG Color Pin
Orange 13
Orange (24AWG) 14
Orange 15
Black 16
Black (24AWG)
17
Red 18
Red (24AWG)
19
Black 20
Red 21
Black 22
Gray 23
Purple 24
Yellow
Yellow
Orange
18 AWG color Pin
Black 5*
Black
Black 6
Black 7
8*
SE7221BK1-E Technical Product Specification
Signal
+3.3VDC
-12VDC
COM
PSON#
COM
COM
COM
Reserved
+5VDC
+5VDC
+5VDC
COM
Signal 18 AWG Color
+12V1 White
12V1 RS Yellow (24AWG)
+12V1 White
+12V2 Brown
+12V2 Brown
12V2 RS Yellow (24AWG)
18 AWG Color
Orange
Blue
Black
Green
Black
Black
Black
N.C.
Red
Red
Red
Black