ASROCK Z87 Extreme9/ac User Manual page 38

SLI/XFIRE Power
Connector
(4-pin SLI/XFIRE_
PWR1)
(see p.11, No. 30)
Infrared Module Header
(5-pin IR1)
(see p.11, No. 29)
Serial Port Header
(9-pin COM1)
(see p.11, No. 31)
32
Please connect this
connector with a hard
disk power connector
when two graphics cards
are installed on this
motherboard.
This header supports an optional
IRTX
+5VSB
DUMMY
wireless transmitting and
receiving infrared module.
1
GND
IRRX
This COM1 header
RRXD1
DDTR#1
DDSR#1
supports a serial port
CCTS#1
module.
1
RRI#1
RRTS#1
GND
TTXD1
DDCD#1