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Step 6
Connect Front-panel Switches/LEDs/Speaker/Audio/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, USB, Line-Out, and Mic-In
connectors to the mainboard’s front-panel connectors group (J12, SJP1, and
USB2), as shown below.
1. ATX Soft Power On/Off (PWON)
2. EPMI
(Hardware System Management
Interface)
+
+
+
-
-
-
PW
O
N
EP
M
I
SP
K
G L
E
D
PW
L
ED
HD L
ED
RS
T
J12
1
SJ
P1
1
USB2
1
+
+
+
-
-
-
PWON
EPMI
SPK
G LED
PW LED
HD LED
RST
J1
2
1
+
+
+
-
-
-
PWON
EPMI
SPK
G LED
PW LED
HD LED
RST
J1
2
1
