
33
Chapter 3 Motherboard Connections
Figure 3-1. JF1: Control Panel Pins
Control Panel
JF1 contains header pins for various buttons and indicators that are normally located on a
control panel at the front of the chassis. These connectors are designed specifically for use
with Supermicro chassis. See the figure below for the descriptions of the front control panel
buttons and LED indicators.
OH/Fan Fail LED
20
NIC1 Activity LED
19
HDD LED
FP PWRLED
3.3V Stby
3.3V
3.3V
X
Ground
NMI
X
NIC2 Activity LED
3.3V Stby
3.3V Stby
Power Button
Reset Button
Reset
PWR
Ground
Ground
1
2
X
3.3V
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; see Chapter 5). 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.
Power Button
Pin Definitions (JF1)
Pins
Definition
1
Signal
2
Ground
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.
Reset Button
Pin Definitions (JF1)
Pins
Definition
3
Reset
4
Ground