2
Hardware Installation
43
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
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
(Power/Standby LED and Keylock
connector)
Pin Assignment
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.
LED Power (-) or Standby Signal
Keylock
Ground
Use pins 21-23 for the Power/
Standby LED.
S1 (POS - Power On Suspend) state, it will blink every second.
When the system is in the S3 (STR - Suspend To RAM) state, it will
blink every 4 seconds.
Note:
If a system did not boot-up and the Power/Standby LED did
not light after it was powered-on, it may indicate that the CPU
or memory module was not installed properly. Please make
sure they are properly inserted into their corresponding socket.
Use pins 24 to 25 to connect to the keyboard lock (located on the
front panel of the system chassis) for locking the keyboard.
