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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 computers front-panel devices (HDD LED,
Power LED, Reset Switch, or USB devices etc.) These cables serve to connect
the front-panel switches, LEDs, USB, Speaker-Out, and Mic-In connectors to
the mainboards front-panel connectors group (JP3, JP4, USB2, and JP2), as
shown below.
1. ATX Soft Power On/Off (PW ON)
2. EPMI
(Hardware System Management
Interface)
U S B 2
1
JP
2
1
+
-
+
+
-
-
-
+
JP
4
JP
3
1
1
EPM
I
PW
R
L
E
D
PW
R
L
E
D
G
RN L
E
D
HDD L
E
D
RS
T
PW
O
N
JP
4
JP
3
1
1
EP
M
I
PW
R
L
E
D
HD
D L
E
D
RS
T
PW
O
N
+
-
-
+
+
-
-
+
PW
R
L
E
D
GR
N L
E
D
JP
4
JP
3
1
1
EP
M
I
PW
R L
E
D
HD
D L
E
D
RS
T
PW
O
N
+
-
-
+
+
-
-
+
PW
R L
E
D
GR
N L
E
D