Connectors And Features; Power Supply; Atx Connector - Kontron COM Express Eval 10 User Manual

5

Connectors and Features

5.1

Power supply

5.1.1 ATX connector

The COM Express® Eval Type 10 power supply follows the ATX 2.x specification and the baseboard should be supplied
by connecting an ATX PSU with 24pin ATX and 4pin ATX_12V supply cable in correct orientation. The 4pin ATX_12V
connector mainly supplies power to the module over 0R resistor R876 and allows powering the module directly in
specified wide range power input. The module additionally is supplied with 5V standby voltage over 0R resistor R246.
Standby voltage can easily be disconnected by opening jumper J67 to drive the module in single supply mode. Use
connector J70 and J69 for current measurements.
Pin
1 (Orange)
2 (Orange)
3 (Black)
4 (Red)
5 (Black)
6 (Red)
7 (Black)
8 (Grey)
9 (Purple)
10 (Yellow)
11 (Yellow)
12 (Orange)
Pin
1 (Black)
2 (Black)
16
ATX Main Power
+3.3V
+3.3V
GND
+5V
GND
+5V
GND
PWR_OK
+5VSB
+12V
+12V
+3.3V
ATX_12V
GND
GND
COM Express® Eval Type 10 / Connectors and Features
Pin
13 (Orange/Brown)
14 (Blue)
15 (Black)
16 (Green)
17 (Black)
18 (Black)
19 (Black)
20
21 (Red)
22 (Red)
23 (Red)
24 (Black)
Pin
3 (Yellow)
4 (Yellow)
ATX Main Power
+3.3V / +3.3V sense
-12V
GND
Power on
GND
GND
GND
No connection
+5V
+5V
+5V
GND
ATX_12V
Module VCC (12V nominal)
Module VCC (12V nominal)