Biostar TA870 Setup Manual page 13

ATXPWR1: ATX Power Source Connector
This connector allows user to connect 24-pin power connector on the ATX
power supply.
Pin Assignment
13 +3.3V
14 -12V
15 Ground
16 PS_ON
17 Ground
18 Ground
19 Ground
20 NC
21 +5V
22 +5V
23 +5V
24 Ground
ATXPWR2: ATX Power Source Connector
This connector provides +12V to CPU power circuit.
Note:
Before you power on the system, please make sure that both ATXPWR1 and ATXPWR2
connectors have been plugged-in.
12 24
1 1 3
Pin Assignment
1 +3.3V
2 +3.3V
3 Ground
4 +5V
5 Ground
6 +5V
7 Ground
8 PW_OK
9 Standby Voltage+5V
10 +12V
11 +12V
12 +3.3V
3 2
4 1
TA870
Pin Assignment
1 +12V
2 +12V
3 +12V
4 +12V
5 Ground
6 Ground
7 Ground
8 Ground
11