MSI 990FXA User Guide - Page 25

Power Supply

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Chapter 2 MS-7640 Power Supply ATX 24-pin Power Connector: JPWR1 This connector allows you to connect an ATX 24-pin power supply. To connect the ATX 24-pin 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. You may use the 20-pin ATX power supply as you like. If you'd like to use the 20-pin ATX power supply, please plug your power supply along with pin 1 & pin 13. 1.+23.+3.33.G4V.3.r+5Vo.5uG6Vn.r7+do.5uG8Vn.rP9do.Wu51nV0R1d.S1+O1B.1+K2211.V+3213.V+4.133.-5V.113.2G6V1V.rP7o1.SuG81-n.rO9Gdo2.NurG0o2n#.ruR1do2n.eu+2ds2n5.+3dV2.5+4V5.GVround ATX 8-pin Power Connector: JPWR2 This connector is used to provide +12V power. 1.G2.rG3o.urG4on.urdGonurdonudnd 5.+61.+721.V+821.V+21V2V Important Make sure that all the connectors are connected to proper ATX power supplies to ensure stable operation of the mainboard. 2-9

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2-9
MS-7640
Chapter 2
Power Supply
ATX 24-p±n Power Connector: JPWR1
Th±s connector allows you to connect an ATX 24-p±n power supply. To connect the ATX
24-p±n power supply, make sure the plug of the power supply ±s ±nserted ±n the proper
or±entat±on and the p±ns are al±gned. Then push down the power supply firmly ±nto the
connector.
You may use the 20-p±n ATX power supply as you l±ke. If you’d l±ke to use the 20-p±n
ATX power supply, please plug your power supply along w±th p±n 1 & p±n 13.
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
22.+5V
10.+12V
20.Res
8.PWR OK
23.+5V
11.+12V
21.+5V
9.5VSB
24.Ground
12.+3.3V
ATX 8-p±n Power Connector: JPWR2
Th±s connector ±s used to prov±de +12V power.
7.+12V
3.
Ground
5.+12V
1.
Ground
8.+12V
4.Ground
6.+12V
2.Ground
Important
Make sure that all the connectors are connected to proper ATX power suppl±es to en-
sure stable operat±on of the ma±nboard.