Hardware TransPort WR21 hardware
Digi TransPort WR Routers User Guide 37
TransPort WR21 rear panel features
1Secondary cellular (WWAN) antenna connector: This SMA female connector connects the
router’s secondary cellular antenna. It is highly recommended to use the secondary antenna for
diversity. In most circumstances, dual antennas provide improved signal strength and better
performance.
2LAN 0 port: This RJ45 port connects the router to a 10/100 base-TLAN. The port is auto-sensing
for speed and wiring (straight-through or cross-over).
3LAN 1 port (optional): This RJ45 port connects the router to a 10/100 base-TLAN. The port is
auto- sensing for speed and wiring (straight-through or cross-over).
4Serial 0 port: This DB9 port provides an asynchronous RS232 (RS485 optional) serial port with
optional RS422/485 support for connecting the router to a compatible serial device. This is a DCE
serial port and allows CLI access to the device by default; the baud rate is 115200. For a pinout,
see TransPort WR21 serial pinout.
5Power connector: This connector connects the router to a power source using either the
supplied power supply or DC power cord. Secure the barrel plug connector by rotating it by 90
degrees once installed into the Digi TransPort router. Center pin is positive.
6 Primary cellular (WWAN) antenna connector: This SMA female connector connects the
router’s primary cellular antenna.
7Power cord input (terminal block variant): This socket connects the router to an alternative
power source.
WWAN
SECONDARY
SERIAL 0
9-30VDC
2A MAX
1
2 3
4
6
WWAN
PRIMARY
5
LAN 1LAN 0
WWAN
SECONDARY
SERIAL 0
WWAN
PRIMARY
LAN 1LAN 0
9-30VDC
2A MAX
7