ASROCK M3A760GMH - V1.0 User Manual page 25

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Though this motherboard provides 24-pin ATX power connector,
it can still work if you adopt a traditional 20-pin ATX power supply.
To use the 20-pin ATX power supply, please plug your power
supply along with Pin 1 and Pin 13.
ATX 12V Power Connector
(4-pin ATX12V1)
(see p.11 No. 3)
Serial port Header
(9-pin COM1)
(see p.11 No.27)
20-Pin ATX Power Supply Installation
Please connect an ATX 12V
power supply to this connector.
This COM1 header supports a
RRXD1
DDTR#1
DDSR#1
serial port module.
CCTS#1
1
RRI#1
RRTS#1
GND
TTXD1
DDCD#1
2 5
2 5
2 5
2 5
2 5
12
24
1
13

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