Usb 3.0 Ports (Cn20 And Cn21); Com1 D-Sub Connector (Cn22) - AXIOMTEK CAPA312 User Manual

2.4.15

USB 3.0 Ports (CN20 and CN21)

The Universal Serial Bus (compliant with USB 3.0 (5Gb/s)) connector on the rear I/O is
for installing USB peripherals such as keyboard, mouse, scanner, etc.
USB 3.0 port 0 and 1 (CN20):
Pin Signal
1 USB_VCC (+5V )
2 USB #0_D-
3 USB #0_D+
4 GND
5 SSRX0-
6 SSRX0+
7 GND
8 SSTX0-
9 SSTX0+
USB 3.0 port 2 and 3 (CN21):
Pin Signal
1 USB_VCC (+5V )
2 USB #2_D-
3 USB #2_D+
4 GND
5 SSRX2-
6 SSRX2+
7 GND
8 SSTX2-
9 SSTX2+
2.4.16

COM1 D-Sub Connector (CN22)

This is a standard 9-pin D-Sub connector for COM1 interface. The pin assignments of
RS-232/422/485 are listed in table below. If you need COM1 to support RS-422 or
RS-485 communication mode, please refer to BIOS setting in section 4.4.
Pin RS-232
1 DCD
2 RXD
3 TXD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI
Board and Pin Assignments
Pin Signal
10 USB_VCC (+5V )
11 USB #1_D-
12 USB #1_D+
13 GND
14 SSRX1-
15 SSRX1+
16 GND
17 SSTX1-
18 SSTX1+
Pin Signal
10 USB_VCC (+5V )
11 USB #3_D-
12 USB #3_D+
13 GND
14 SSRX3-
15 SSRX3+
16 GND
17 SSTX3-
18 SSTX3+
RS-422 RS-485
TX- Data-
TX+ Data+
RX+ No use
RX- No use
No use No use
No use No use
No use No use
No use No use
No use No use
CAPA312 3.5" Board
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