3.1.2 Serial Port Connector; Usb3.0 Stack Ports - AXIOMTEK tBOX324-894-FL Series User Manual

3.1.2 Serial Port Connector

The COM3~COM4 port connector is a 2x5 terminal block connector.The pin assignment of
RS-232/RS-422/RS-485 is listed on the following table. If you need COM port to support RS-
422 or RS-485, please set it up in BIOS settings.
Pin RS-232
1 DCD, Data carrier detect
2 RXD, Receive data
3 TXD, Transmit data
4 DTR, Data terminal ready
5 GND, ground
6 DSR, Data set ready
7 RTS, Request to send
8 CTS, Clear to send
9 RI, Ring indicator
10 NC
3.1.3

USB3.0 Stack Ports

Pin Signal USB Port 0
USB_VCC (+5V level
1
standby power)
2 USB_Data2-
3 USB_Data2+
4 GND
5 SSRX2-
6 SSRX2+
7 GND
8 SSTX2-
9 SSTX2+
Connector
tBOX324-894-FL Series User's Manual
RS-422
TX-
TX+
RX+
RX-
GND, ground
NC
NC
NC
NC
NC
Pin Signal USB Port 1
USB_VCC (+5V level
10
standby power)
11 USB_Data3-
12 USB_Data3+
13 GND
14 SSRX3-
15 SSRX3+
16 GND
17 SSTX3-
18 SSTX3+
RS-485
Data-
Data+
NC
NC
GND, ground
NC
NC
NC
NC
NC
13