Supermicro AS-4124GS-TNR - Page 51

51
Chapter 4: Motherboard Connections
Universal Serial Bus (USB) Ports
Four USB 3.0 ports (USB1/2, 3/4) are located on the I/O back panel. A Type A internal USB
2.0 header provides front access. Connect appropriate cables here to use USB support. (USB
cables are not included).
Back Panel USB (3.0)
Pin Denitions
Pin# Denition Pin# Denition
1 VBUS 10 Power
2 D- 11 󰀨
3 D+ 12
4 Ground 13 Ground of PWR Return
5 StdA_SSRX- 14 SuperSpeed Receiver
6 StdA_SSRX+ 15 󰀨
7 GND_DRAIN 16 Ground for Signal Return
8 StdA_SSTX- 17 SuperSpeed Transmitter
9 StdA_SSTX+ 18 󰀨
USB (2.0)
Pin Denitions
Pin# Denition
1 Vcc
2 Data-
3 Data+
4 Ground
Unit Identier Switch/UID LED Indicator

A front UID switch is located on pins 7 & 8 of the front panel control (JF1). When you press
the front or the rear UID switch, both front and rear UID LEDs will be turned on. Press the
󰀨
of a system that may be in need of service. (Note: UID can also be triggered via IPMI on
the motherboard. For more information, please refer to the IPMI User's Guide posted on our
website at http://www.supermicro.com.)
UID Switch
Pin Denitions
Pin# Denition
1 Ground
2 Ground
3 Button In
4 Button In
UID LED
Pin Denitions
Color Status
Blue: On 