2
28
Hardware Installation
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Pin Assignment
HD-LED
(Primary/Secondary IDE LED)
G-LED
(Green LED)
ATX-SW
(ATX power switch)
G-SW
(Green switch)
RESET
(Reset switch)
SPEAKER
(Speaker connector)
KEYLOCK
(Keylock and Power LED
connector)
HDD LED Power
HDD
N. C.
Green LED Power
Green
N. C.
PWRBT
Ground
N. C.
SMI
Ground
N. C.
H/W Reset
Ground
N. C.
Speaker Data
N. C.
Ground
Speaker Power
N. C.
LED Power
N.C.
Standby Signal
Keylock
Ground
Use pins 21 to 23
for the Power/
Standby LED.
KEYLOCK: Power/Standby LED and Keylock Connector
Use pins 21-23 to connect to the Power/Standby LED. This LED
will light when the system’s power is on and blinks when the
system enters the Suspend mode.
Use pins 24 to 25 to connect to the keyboard lock (located on
the front panel of the system chassis) for locking the keyboard.
