EXFO FTB-2 - Manual (Page 211)

Preparing for Automation
FTB-2 and FTB-2 Pro 201
Linking Units with the Ethernet Port
Linking Units with the Ethernet Port
Your unit is equipped with an Ethernet port (10/100 000) to send and
receive data. Refer to the Windows documentation for information about
Ethernet port settings and possibilities.
Linking Units Using a Serial Port
Your unit is not equipped with a serial (RS-232) port, but you can connect a
USB to RS-232 adapter (sold by EXFO) to your one of the USB ports of your
unit if you wish to send and receive data via RS-232.
Ethernet (RJ-45) port