Micro Star Computer MS- 9130 v1.x - Manual (Page 22)

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Hardware Setup
ATX 20-Pin Power Connector: ATX1
You may also choose to use ATX power supply. To connect to the ATX
power supply, make sure the plug of the power supply is inserted in the proper
orientation and the pins are aligned. Then push down the power supply firmly
into the connector.
MSI Reminds You...
For this JPR1 power connector, you may use the 20-pin ATX power
supply or 24-pin SSI power supply as you like. If you’d like to use
the SSI power supply, please remove the sticker (covered the 11,
12, 23 and 24 pins, shown as the photo below) marked “SSI ONLY”
on the JPR1 power connector to insert the SSI power supply in the
proper orientation for correct alignment. If you’d like to use the
ATX power supply, please just insert your power supply in the rest
pins without removing the sticker.
PIN SIGNAL
11 3.3V
12 -12V
13 GND
14 PS_ON
15 GND
16 GND
17 GND
18 -5V
19 5V
20 5V
PIN SIGNAL
1 3.3V
2 3.3V
3 GND
4 5V
5 GND
6 5V
7 GND
8 PW_OK
9 5V_SB
10 12V
ATX1 Pin Definition
ATX1
10 1
20 11