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Table 6
X59 - ATX Pinout
Pin Signal
Description
Pin Signal
1
+3.3 V
Power 3.3 VDC
13
+3.3V
Power 3.3 VDC
2
+3.3 V
Power 3.3 VDC
14
-12V
Power supply -12 VDC
3
GND
Power ground
15
GND
Power ground
4
+5 V
Power 5 VDC
16
PS_ON# Power supply on (active low). Short this pin to GND to switch on
power supply; disconnect from GND to switch off.
5
GND
Power ground
17
GND
Power ground
6
+5V
Power 5 VDC
18
GND
Power ground
7
GND
Power ground
19
GND
Power ground
8
PWR_OK Power Ok
20
N.C
Not connected
9
5V_SB
Standby power 5 VDC 21
+5V
Power 5 VDC
10
+12 V
Power 12 VDC
22
+5V
Power 5 VDC
11
+12 V
Power 12 VDC
23
+5V
Power 5 VDC
12
+3.3 V
Power 3.3 VDC
24
GND
Power ground
Note
The -12 V power output of the ATX power supply is not used.
Table 7
X128 - ATX (4-pin)
Pin Signal
Description
Pin Signal
Description
1
GND
Ground
2
GND
Ground
3
+12 V
Power 12 VDC
4
+12 V
Power 12 VDC
Connector Type
X58, X60: 2.54 mm grid jumper
X59: 24-pin ATX 2.0 power connector
X128: 4-pin ATX connector
X59
X128
1
2
3
4
