Supermicro SuperServer SSG-631E-E1CR16H User Manual page 63

UID (Unit Idenfication)/BMC Reset Switch and UID/BMC Reset LED Indicators
A UID LED/BMC Reset switch (JUIDB1) is located on the rear side of the motherboard. This
switch has dual functions. It can be used to identify a system unit that is in need of service,
and it can also be used to reset the BMC settings.
When functioning as a BMC reset switch, JUIDB1 will trigger a cold reboot when the user
presses and holds the switch for six seconds. It will also restore the BMC to the manufacturer's
default when the user presses and holds the switch for 12 seconds.
When functioning as a UID LED switch, JUIDB1 will turn both rear UID LED (LED6) and front
UID LED (pin 7/pin 8 of JF1) on and off when the user presses the switch on/off.
To achieve these dual purposes, the UID LED/BMC Reset switch works in conjunction with
the BMC Heartbeat LED (LEDBMC) and front/rear UID LEDs. Please note that UID can also
be triggered via BMC on the motherboard. For more details, refer to the BMC User's Guide
posted on our website at
USB 3.0 Header (USB7/8)
Pin Definitions
Pin# Definition Pin#
1 VBUS 20
2 USB3_RN 19
3 USB3_RP 18
4 GND 17
5 USB3_TN 16
6 USB3_TP 15
7 GND 14
8 USB_N 13
9 USB_P 12
10 GND 11
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63
Chapter 4: Motherboard Connections
Definition
NC
VBUS
USB3_RN
USB3_RP
GND
USB3_TN
USB3_TP
GND
USB_N
USB_P
for more information on BMC.