Supermicro SuperServer SYS-221BT-DNTR - 4.3 Input;Output Ports

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Chapter 4: Motherboard Connections
4.3 Input/Output Ports
VGA Connector
A VGA connection is located at JVGA1 on the rear I/O panel. This VGA connector provides
analog interface between the computer and the video displays.
COM Port
A COM (communication) port that supports serial link interface is located on the rear side of
the motherboard.
BMC LAN
A dedicated BMC LAN (BMC LAN) is located on the rear I/O panel. The dedicated BMC LAN
provides LAN support for the BMC (Baseboard Management Controller). Connect an RJ45
cable to JUSBRJ45 on the I/O rear panel for BMC LAN support. Please refer to the LED
Indicator section for LAN LED information.
Universal Serial Bus (USB) Ports and Headers
There are two USB 3.1 ports (USB0/1), located at JUSB1, on the rear I/O panel. In addition,
USB 3.1 header, located at J38, supports two USB connections (USB2/USB3) for front access.
These USB ports and header can be used for USB support via USB cables (not included).
Rear I/O Panel USB 0/1 (3.0)
Pin Denitions
Pin# Denition Pin# Denition
A1 VBUS B1 Power
A2 D- B2 USB_N
A3 D+ B3 USB_P
A4 GND B4 GND
A5 Stda_SSRX- B5 USB3_RN
A6 Stda_SSRX+ B6 USB3_RP
A7 GND B7 GND
A8 Stda_SSTX- B8 USB3_TN
A9 Stda_SSTX+ B9 USB3_TP