USB-RS-232-422-485-Docking
AUM-600
USB to RS-232 1200m 4-Wire Extender w/TXD-RXD Driver
ASM-600
RS-232 1200m 4-Wire Extender w/TXD-RXD Driver
AUM-620
USB to RS-232 1200m 8-Wire Extender w/TXD-RXD/CTS-RTS Driver
ASM-620
RS-232 1200m 8-Wire Extender w/TXD-RXD / CTS-RTS Driver
 
USB / RS-232 <=> RS-232 - 422 - 485 
AUM-485B USB to RS-422 / 485 Converter  ASM-485 RS-232 to RS-422 / 485 Converter AUM-328522 USB to RS-232 / 422 / 485 Converter AUM-485 USB to DB9-RS-422 / 485 Converter
Docking
ASP-100 USB to RS232 + IEEEE-1284 Cable  MDK-200 2 Port USB2.0 HUB & RS232 + IEEE-1284