- 16 -
Step 6
Connect Front-Panel Switches/LEDs/Speaker/USB connectors
You can find there are several different cables already existing in the
system case and originating from the computer's front-panel devices
(HDD LED, Green LED, Reset Switch, PC Speaker, or USB devices etc.)
These cables serve to connect the front-panel switches, LEDs, and USB
connectors to the mainboard's front-panel connectors group (J3 and
USB1), as shown below.
1. Green_LED (GLED)
2. HDD_LED (HDLED)
3. ATX Soft Power On/Off (PWRON)
4. Hardware Reset Swith (Reset)
5. Power_LED(PWRLED)
6. System Management Interface Button(EPMI)
7. PC Speaker(Speaker)
8. Extended USB Header
U SB1 3&
4
1
G
reen
L
E
EP
M
I
Sp
ea
ke
r
Re
se
t
+P
W
R
L
E
D
J3
+H
D
D
L
E
D
PW
R
O
N
1
J3
S peaker
R eset
H DD LE D
2
6
7
5
G reenLE D
P W R LE D
P W R ON
E PM I
1
4
3
8
US B port 3
US B port 4
KE
Y
GN
D
+
U
S
BP3-
U
S
BP3
+5
V
+5
V
U
S
BP4-
U
S
BP4
+
GN
D
GN
D
10
1
2
