MSI 990XA-GD55 series

Hardware Setup
MS-7640
Chapter 2
2-9
Hardware Setup
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 󰘰rmly 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.
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13.+3.3V
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13.+3.3V
14.-12V
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14.-12V
15.Ground
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15.Ground
16.PS-ON#
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16.PS-ON#
17.Ground
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17.Ground
18.Ground
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18.Ground
19.Ground
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19.Ground
22.+5V
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22.+5V
20.Res
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20.Res
23.+5V
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23.+5V
21.+5V
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21.+5V
24.Ground
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24.Ground
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n Power Connector: JPWR2
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n Power Connector: JPWR2
n Power Connector: JPWR2
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n Power Connector: JPWR2
n Power Connector: JPWR2
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n Power Connector: JPWR2
n Power Connector: JPWR2
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n Power Connector: JPWR2
n Power Connector: JPWR2
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n Power Connector: JPWR2
n Power Connector: JPWR2
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n Power Connector: JPWR2
n Power Connector: JPWR2
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n Power Connector: JPWR2
n Power Connector: JPWR2
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n Power Connector: JPWR2
de +12V power.
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de +12V power.
1.
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1.