Do you have Serial (RS-485)/(RS-232)/(RS-422) devices for which you want to run diagnostics or troubleshooting software on your laptop? Your laptop does not have a serial port?

ProtoConvert's PRO-U-03 is just the right solution for you. Tested with 100's of installations this USB to  RS485/RS232/RS422 converter is easy to use and quick to install. It is a pocket size device which you can carry on the go. No need of external power supply and plug and play installer.

The model PRO-U-03 is USB bus power, high speed USB to RS485(2-wire and 4-wire)/RS232/RS422 converter. It supports auto baud rate.  DIP switches at the back allows you to select the between RS485/RS232/RS422.

SPECIFICATIONS :

Interface	USB TO RS232/ RS485- 2 W / 4 W
Isolation	500V
Operation	1) RS232 ( TX, RX ONLY ) 2) MULTI-DROP HALF DUPLEX (RS485- 2 W) 3) MULTI-DROP FULL DUPLEX (RS485- 4 W)
Speed	2400 TO 115KBPS
Connectors	1) USB - ' A ' TYPE FEMALE CONNECTOR 2) RS232 - DB 9 3) RS 485 - SCREW TERMINAL.
Indications	Power, TX, RX
Power	USB bus power
Size	90[L] X 58[W] X 20[D] MM

MODEL PRO-U-03 SUPPORTS ONLY RS232 CONVERSION WITH HARDWARE HANDSHAKE