SE7221BK1-E Technical Product Specification
25
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.

Table 16. Power Connector Pin-out (CN4H1)
Pin Signal 18 AWG Color Pin Signal 18 AWG Color
1* +3.3VDC Orange 13 +3.3VDC Orange
3.3V RS Orange (24AWG) 14 -12VDC Blue
2 +3.3VDC Orange 15 COM Black
3* COM Black 16 PSON# Green
COM RS Black (24AWG) 17 COM Black
4* +5VDC Red 18 COM Black
5V RS Red (24AWG) 19 COM Black
5 COM Black 20 Reserved N.C.
6 +5VDC Red 21 +5VDC Red
7 COM Black 22 +5VDC Red
8 PWR OK Gray 23 +5VDC Red
9 5 VSB Purple 24 COM Black
10 +12V3 Yellow
11 +12V3 Yellow
12 +3.3VDC Orange

Table 17. Auxiliary CPU Power Connector Pin-out (CN4B1)
Pin Signal 18 AWG color Pin Signal 18 AWG Color
1 COM Black 5* +12V1 White
2 COM Black
12V1 RS Yellow (24AWG)
3 COM Black 6 +12V1 White
4 COM Black 7 +12V2 Brown
8* +12V2 Brown
12V2 RS Yellow (24AWG)