Supermicro SuperServer SYS-110D-4C-FRAN8TP User Manual page 60

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 VGA port on the back panel. The UID LED
(LED2) 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 BMC on the motherboard. For more information
on BMC, please refer to the BMC User's Guide posted on our website at
supermicro.com/manuals/other/BMC_Users_Guide_X12_H12.pdf.
UID Switch
Pin Definitions
Pin# Definition
1 Ground
2 Ground
3 Button in
4 Button in
Universal Serial Bus (USB) Ports
There are two USB 3.0 ports (USB4/5) on the I/O back panel and two USB 2.0 headers
(USB0/1 and USB2/3) on the motherboard. The onboard headers can be used to provide
front side USB access with a cable (not included).
Front Panel USB0/1, 2/3 (2.0) Headers
Pin Definitions
Pin# Definition Pin#
1 +5V 2
3 USB_N 4
5 USB_P 6
7 Ground 8
9 Key 10
Definition
+5V
USB_N
USB_P
Ground
NC
60
Chapter 4: Motherboard Connections
UID LED
Pin Definitions
Color Status
Blue: On Unit Identified
Back Panel USB4/5 (3.0)
Pin Definitions
Pin# Definition Pin#
A1 VBUS B1
A2 D- B2
A3 D+ B3
A4 GND B4
A5 Stda_SSRX- B5
A6 Stda_SSRX+ B6
A7 GND B7
A8 Stda_SSTX- B8
A9 Stda_SSTX+ B9
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Definition
Power
USB_N
USB_P
GND
USB3_RN
USB3_RP
GND
USB3_TN
USB3_TP