StarTech.com 1 Port Metal Industrial USB to RS422/RS485 Serial Adapter w/ Isolation, USB B, RS-422/485, 1.8 m, Black StarTech.com 1 Port Metal Industrial USB to RS422/RS485 Serial Adapter w/ Isolation. Connector 1: USB B, Connector 2: RS-422/485, Cable length: 1.8 m. Product colour: Black