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Universal Serial Bus Headers
Four additional USB headers (USB2/3 and USB4/5) are included on the server board. These may
be used for front side access. A USB cable (not included) is needed for the connection.
Universal Serial Bus Headers
Pin Definitions (USB2/3, USB4/5)
USB2
Pin #
1
2
3
4
5
Serial Ports
The COM1 serial port is located on the IO backplane. COM2 is a header on the server board.
Note:
Pin 10 is included on the header but not on the port. NC indicates no connection.
Serial Port
Pin Definitions (COM1, COM2)
Pin #
1
2
3
4
5
Fan Headers
The server board has six fan headers, designated Fan1 through Fan6. All are 4-pin fans to provide
a Pulse Width Modulated (PWM) signal, however pins 1-3 of the headers are backward
compatible with traditional 3-pin fans. Connect the CPU heatsink fan and the system (chassis) fans
to these headers. Their speed is controlled via Thermal Management with a BIOS setting.
Note:
When using Thermal Management settings, please use all 3-pin fans or all 4-pin fans. Do not use
both 3-pin fans and 4-pin fans together.
Fan Header
Pin Definitions (FAN 1-6)
Pin #
1
2
3
4
USB3, USB4
Definition
Pin #
Definition
+5V
1
+5V
PO-
2
PO-
PO+
3
PO+
Ground
4
Ground
Key
5
NC
Definition
Pin #
Definition
DCD
6
DSR
RXD
7
RTS
TXD
8
CTS
DTR
9
RI
Ground
10
NC
Definition
Ground (Black)
+12V (Red)
Tachometer
PWM Control
Chapter Five : Advanced Serverboard Setup
69
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