Features: 1USB to RS485/RS422: This adapter allows you to easily connect RS485 or RS422 device directly to your laptop's USB port. 2Plug and Play: This USB 2.0 to RS485 adapter supports plug and play, hot swap. Comes with terminal and driver CD. 3Wide Application: This USB 2.0 to RS422 adapter is suitable for car computer, industrial instruments, meters, testing equipment, monitoring system, automatic control equipment, mini phone, digital camera, MODEM, ISDN terminal adapter and laptop or PC. 4Widely Compatible: This USB to RS485 RS422 is suitable for Win 95, 98, 98se, ME, 2000, XP, NT3.5 or higher, for Linux, for OS X Laptop. 5USB 2.0/1.1: This USB to RS422 converter adopts USB2.0 and downward compatible with USB1.1. Package included: 1 x USB&nbspto&nbspRS422&nbspAdapter 1 x Terminal 1 x Driver CD