ASROCK 870 EXTREME User Manual page 27

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ATX 12V Power Connector
(8-pin ATX12V1)
(see p.11 No. 3)
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.11 No. 25)
Serial port Header
(9-pin COM1)
(see p.11 No.31)
HDMI_SPDIF Header
(2-pin HDMI_SPDIF1)
(see p.11 No. 33)
Please connect an ATX 12V
8
5
power supply to this connector.
4
1
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
+12V
motherboard. This IEEE 1394
RXTPBP_0
GND
header can support one IEEE
RXTPAP_0
1394 port.
This COM1 header supports a
RRXD1
DDTR#1
serial port module.
DDSR#1
CCTS#1
1
RRI#1
RRTS#1
GND
TTXD1
DDCD#1
HDMI_SPDIF header, providing
SPDIF audio output to HDMI VGA
1
GND
card, allows the system to
SPDIFOUT
connect HDMI Digital TV/
projector/LCD devices. Please
connect the HDMI_SPDIF
connector of HDMI VGA card to
this header.
2 7
2 7
2 7
2 7
2 7
8
5
4
1

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