ASRock IMB-185 [18/40] System panel header this header accommodates

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 congure

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 sys-

tem is in S1/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 assign-ments are

matched correctly.

System Panel Header This header accommodates

(9-pin PANEL1)

several system front panel

(see p.8, No. 13)

functions.

Digital Input / Output Pin Header

(10-pin JGPIO1)

(see p.8, No. 15)

PIN Signal Name PIN Signal Name

1 SIO_GP24 2 SIO_GP20

3 SIO_GP25 4 SIO_GP21

5 SIO_GP26 6 SIO_GP22

7 SIO_GP27 8 SIO_GP23

9 JGPIO_PWR1 10 GND