Hi-Fi H87S3/Hi-Fi B85S3/Hi-Fi H81S3
13
2.7 Headers & Connectors
ATXPWR1: ATX Power Source Connector
This connector allows user to connect an ATX 24-pin power supply. Make sure to
find the proper orientation before plugging the connector.
Pin Assignment
Pin Assignment
13 +3.3V
1 +3.3V
14 -12V
2 +3.3V
15 Ground
3 Ground
16 PS_ON
4 +5V
17 Ground
5 Ground
18 Ground
6 +5V
19 Ground
7 Ground
20 NC
8 PW_OK
21 +5V
9 Standby
5V
22 +5V
10 +12V
23 +5V
11 +12V
24 Ground
12 +3.3V
ATXPWR2: ATX Power Source Connector
The connector pr12V to the CPU power circuit.
Pin
Assignment
1 +12V
2 +12V
3 Ground
4 Ground
Note1:
Before you power on the system, please make sure that both ATXPWR1 and ATXPWR2
connectors have been plugged-in.
Note2:
Insufficient power supplied to the system may result in instability or the peripherals not
functioning properly. Use of a PSU with a higher power output is recommended when configuring a
system with more power-consuming devices.
