Supermicro SuperServer 120C-TR User Manual page 18

Connector
S-SGPIO2
SUM-13/14
SUM-15/16
USB0/1 (2.0) (J35)
USB2/3 (3.0) (JUSBRJ45)
UID (JUIDB1)
VGA (JVGA1)
VROC (JRK1)
LED Description
LE3 Power LED
LE4 M.2 _P1 Heartbeat LED
LE6 Unit Identifier (UID) LED
LE7 M.2 _P2 Heartbeat LED
LEDM1 BMC Heartbeat LED
Description
Serial Link General Purpose I/O connection header (for S-SATA4/5 SuperDOM
support)
BMC firmware
System BIOS
Front Accessible USB header with two USB 2.0 connections
Rear I/O USB Port 2/ Port 3 (USB 3.0)
Unit Identifier (UID) button
Rear VGA port on the I/O back panel
Intel VROC key header for NVMe RAID support (See the note below.)
State: Status
LED On: Onboard Power On
Blinking Green: M.2 device normal
Solid Blue: Unit Identified
Blinking Green: M.2 device normal
Blinking Green: BMC Normal
18
Chapter 1: Introduction