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Chapter 4: Motherboard Connections
SuperServer 1019S-M2 User's Manual
Unit Identifier Switch/UID LED Indicator
A Unit Identifier (UID) switch and an LED Indicator are located on the motherboard. The UID
switch is located at JUIDB1, which is next to the DP port on the I/O back panel. The UID
LED (LED1) is located next to the UID switch. When you press the UID switch, the UID LED
will be turned on. Press the UID switch again to turn off the LED indicator. The UID Indicator
provides easy identification of a system unit that may be in need of service.
Note:
UID can also be triggered via IPMI on the motherboard. For more information on IPMI,
please refer to the IPMI User's Guide posted on our website at
UID Switch
Pin Definitions
Pin#
Definition
1
Ground
2
Ground
3
Button In
4
Button In
UID LED
Pin Definitions
Color
Status
Blue: On
Unit Identified
Figure 4-1. JF1: Control Panel Pins
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.
Power Button
Pin Definitions (JF1)
Pin#
Definition
1
Signal
2
Ground
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 7). To turn off the power when the system
is in suspend mode, press the button for 4 seconds or longer.
Power Button
OH/Fan Fail LED
1
NIC1 Link LED
Reset Button
2
Power Fail LED
HDD LED
FP PWRLED
Reset
PWR
3.3V Stby
3.3V Stby
UID LED Blue Cathode
Ground
Ground
19
20
3.3V
X
Ground
NMI
X
NIC2 Link LED
NIC2 Activity LED
NIC1 Activity LED
