Owner's manual

ASRock A75 Pro4 Motherboard

English

Serial port Header This COM1 header supports a

(9-pin COM1)

serial port module.

(see p.2 No.30)

HDMI_SPDIF Header HDMI_SPDIF header, providing

(2-pin HDMI_SPDIF1)

SPDIF audio output to HDMI

(

see p.2 No. 31)

VGA card, allows the system to

connect HDMI Digital TV/

projector/LCD devices. Please

connect the HDMI_SPDIF

connector of HDMI VGA card to

this header.

SPDIFOUT

GND

2.11 Smart Switches

This motherboard has three smart switches: power switch, reset switch and clear

CMOS switch, allowing users to quickly turn on/off or reset the system or clear the

CMOS values.

Power Switch Power Switch is a smart switch,

(PWRBTN)

allowing users to quickly turn

(see p.2 No. 18)

on/off the system.

Reset Switch Reset Switch is a smart switch,

(RSTBTN)

allowing users to quickly reset

(see p.2 No. 19)

the system.

Clear CMOS Switch Clear CMOS Switch is a smart

(CLRCBTN)

switch, allowing users to quickly

(see p.3 No. 14)

clear the CMOS values

RESET

clr

CMOS