- 17 -
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,
Power 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 (JP7 and USB2), as shown below.
1. HDD_LED (HLED)
2. Green_LED (GLED)
3. Hardware Reset Switch (RESET)
4. ATX Soft Power On/Off (PWON)
5. EPMI (Hardware System Management Interface)
6. Power_LED (PLED)
7. PC Speaker (SPEAKER)
8. I2C
9. Extended two USB Connector Header
USB 3&4 USB 5&6
USB2
USB3
1
1
RE
SE
T
HL
ED
+
-
+
-
+
-
G
LE
D
SP
EA
KE
R
EP
M
I
PW
O
N
PL
ED
1
JP
7
I2
C
1
1
3
6
5
7
8
2
4
+5
V
US
BD
1-
US
BD
1+
G
N
D
N/
A
+5
V
US
BD
0-
U
SB
D
0+
G
N
D
KE
Y
1
USB port 4 / 6
USB port 3 / 5
9
