Kontron COMe Ref. Carrier T2 - Manual (Page 29)

COM Express™ miniBaseboard Type 2 / Connectors and Features
24
5 Connectors and Features
5.1 Power supply
5.1.1 ATX connector
The miniBaseboard's power supply follows the ATX specification and in default configuration the baseboard should be
supplied by connecting an ATX PSU with 20pin ATX and 4pin ATX_12V supply cable in correct orientation. The 4pin
ATX_12V connector mainly supplies power to the module over 0R resistor R669. The module is supplied with 5V
standby voltage over 0R resistor R670.
Pin 20pin ATX J58 Pin 20pin ATX J58 Pin 4pin ATX J59
1 +3.3VDC 11 +3.3VDC 1 GND
2 +3.3VDC 12 -12VDC 2 GND
3 GND 13 GND 3 +12VDC or
8.5-18V in single
supply mode
4 +5VDC 14 PS_ON
5 GND 15 GND
6 +5VDC 16 GND 4 +12VDC or
8.5-18V in single
supply mode
7 GND 17 GND
8 PWR_OK 18 -5VDC
9 +5VSB 19 +5VDC
10 +12VDC 20 +5VDC