ASROCK K10N780SLIX3-WIFI User Manual page 34

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
(8-pin ATX12V1)
(see p.12, No. 2)
Though this motherboard provides 8-pin ATX 12V power connector, it can still
work if you adopt a traditional 4-pin ATX 12V power supply. To use the 4-pin ATX
power supply, please plug your power supply along with Pin 1 and Pin 5.
IEEE 1394 Header
(9-pin FRONT_1394)
(see p.12 No. 26)
Serial port Header
(9-pin COM1)
(see p.12 No.24)
20-Pin ATX Power Supply Installation
Please note that it is necessary
to connect a power supply with
8 5
ATX 12V plug to this connector.
4 1
Failing to do so will cause power
up failure.
4-Pin ATX 12V Power Supply Installation
Besides one default IEEE 1394
RXTPAM_0
port on the I/O panel, there is one
GND
RXTPBM_0
+12V IEEE 1394 header
GND
(FRONT_1394) on this
1
motherboard. This IEEE 1394
+12V
RXTPBP_0
GND
header can support one IEEE
RXTPAP_0
1394 port.
This COM1 header
RRXD1
DDTR#1
DDSR#1 supports a serial port module.
CCTS#1
1
RRI#1
RRTS#1
GND
TTXD1
DDCD#1
3 4 3 4 3 4 3 4 3 4
12 24
1 13
8 5
4 1