Supermicro X13DSF-A User Manual page 59

UID (Unit Identification)/BMC Reset Switch and UID/BMC Reset LED Indicators
A UID LED/BMC Reset switch (JUIDB1) is located on the AOM-DSF-IO. 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 (LED1) on the
AOM-DSF-IO and front UID LED (Pin 3/Pin 4 of JFP1) on the motherboard 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) on the motherboard and front/rear UID LEDs. Please
note that UID can also be triggered via BMC on the motherboard. For more details on the
UID LEDs and BMC LEDs, refer to the tables below. Also, refer to the BMC User's Guide
posted on our website at
When Used as a UID LED Switch
Work w/ Rear UID LED (LED1) & Front UID LED (JFP1: Pin 3&
Pin 4)
Rear UID LED LED1
Front UID LED Pin 3/Pin 4 (JFP1)
Press the switch (JUIDB1) to turn on and off both rear and
front UID LED indicators;
* Refer to the next page for the locations of JUIDB1, LED1, Pin3/Pin4 of JFP1, and LEDBMC.
https://www.supermicro.com
UID/BMC Reset Switch (JUIDB1)
Features & Settings
When Used as a BMC Reset Switch
Work with BMC Heartbeat LED (LEDBMC)
Blue: Unit identified BMC Heartbeat LED
Blue: Unit identified BMC Reset: Press
& hold the switch
(JUIDB1) six seconds
BMC Reset: Press
& hold the switch
(JUIDB1) 12 seconds
UID/BMC Reset Switch (JUIDB1)
Pin Definitions
Pin# Definition
1 Ground
2 Ground
3 Button In
4 Button In
59
Chapter 2: Installation
for more information on BMC.
LEDBMC Blinking green: BMC Normal
LEDBMC: Solid green: during reboot
Triggering a cold reboot; LED: solid
green on during cold reboot
LEDBMC: Solid green: during BMC reset
BMC: Reset to the manufacturer's
default; LED: solid on during BMC Reset