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Chapter 3: Motherboard Connections
Control Panel
JF1 contains header pins for various control panel connections. See the figure below for the
pin locations and definitions of the control panel buttons and LED indicators.
All JF1 wires have been bundled into a single cable to simplify this connection. Make sure
the red wire plugs into pin 1 as marked on the motherboard. The other end connects to the
control panel PCB board.
8
7
3.3V Stby
3.3V
HDD LED
Power LED
2
1
Reset Button
Power Button
Ground
Ground
Figure 3-2. JF1 Header Pins
Power Button
The Power Button connection is located on pins 1 and 2 of JF1. Momentarily contacting both
pins will power on/off the system. This button can also be configured to function as a suspend
button (with a setting in the BIOS). To turn off the power in the suspend mode, press the
button for at least 4 seconds. Refer to the table below for pin definitions.
Reset Button
The Reset Button connection is located on pins 3 and 4 of JF1. Attach it to a hardware reset
switch on the computer case to reset the system. Refer to the table below for pin definitions.
Power Button
Pin Definitions (JF1)
Pin#
Definition
1
Power Button
2
Ground
Reset Button
Pin Definitions (JF1)
Pin#
Definition
3
Reset
4
Ground
