ASRock B450M Pro4 - Инструкция по эксплуатации - Страница 30

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2.6  Onboard Headers and Connectors

System Panel Header
(9-pin PANEL1)
(see p.1, No. 13)

Connect the power 
switch, reset switch and 
system status indicator on 
the chassis to this header 
according to the pin 
assignments below. Note 
the positive and negative 
pins before connecting 
the cables.

PWRBTN (Power Switch): 

Connect to the power switch on the chassis front panel. You may configure the way to 
turn off your system using the power switch.

RESET (Reset Switch):

Connect to the reset switch on the chassis front panel. Press the reset switch to restart 
the computer if the computer freezes and fails to perform a normal restart.

PLED (System Power LED):

Connect to the power status indicator on the chassis front panel. The LED is on when 
the system is operating. The LED keeps blinking when the system is in S3 sleep state. 
The LED is off when the system is in S4 sleep state or powered off (S5).

HDLED (Hard Drive Activity LED):

Connect to the hard drive activity LED on the chassis front panel. The LED is on when 
the hard drive is reading or writing data.

The front panel design may differ by chassis. A front panel module mainly consists 
of power switch, reset switch, power LED, hard drive activity LED, speaker and etc. 
When connecting your chassis front panel module to this header, make sure the wire 
assignments and the pin assignments are matched correctly.

Onboard headers and connectors are NOT jumpers. Do NOT place jumper caps over 
these headers and connectors. Placing jumper caps over the headers and connectors 
will cause permanent damage to the motherboard.

G N D

R E S E T #

P W R B T N #

P L E D -

P L E D +

G N D

H D L E D -

H D L E D +

1

G N D