Kontron COMe Eval Carrier T2 - Manual (Page 15)

COM Express® Eval Carrier Type 2
14
5 Connectors and Features
5.1 Power supply
5.1.1 ATX connector
The COM Express® Eval Type 2 power supply follows the ATX 2.x specification and the baseboard should be
supplied by connecting an ATX PSU with 24-pin ATX (J55) and 4-pin ATX_12V (J54) supply cable in correct
orientation. The 4-pin ATX_12V connector mainly supplies power to the module.
Pin ATX Main Power Pin ATX Main Power
1 (Orange) +3.3V 13 (Orange/Brown) +3.3V / +3.3V sense
2 (Orange) +3.3V 14 (Blue) -12V
3 (Black) GND 15 (Black) GND
4 (Red) +5V 16 (Green) Power on
5 (Black) GND 17 (Black) GND
6 (Red) +5V 18 (Black) GND
7 (Black) GND 19 (Black) GND
8 (Grey) PWR_OK 20 No connection
9 (Purple) +5VSB 21 (Red) +5V
10 (Yellow) +12V 22 (Red) +5V
11 (Yellow) +12V 23 (Red) +5V
12 (Orange) +3.3V 24 (Black) GND
Pin ATX_12V Pin ATX_12V
1 (Black) GND 3 (Yellow) Module VCC (12V nominal)
2 (Black) GND 4 (Yellow) Module VCC (12V nominal)