USB to Serial 16 and 32 port adapters are 19” rack-mounted units. Available in RS232 and RS422/485 versions. The driver creates virtual COM ports for Windows XP/7/8/10, Win-Server 2003 to 2008 R2 (x86/x64).

These industrial USB to serial RS323/422/485 units are rack mountable allowing up to 32 Serial Ports to be controlled from a single USB port.

Identical to parts sold by EasySync (no longer trading)

16 Port ES-U-1016-RM
16 Port ES-U-2016-RM
32 Port ES-U-1032-RM


  • Adds 16 or 32 high speed RS-232/422/485 serial ports by connecting to a USB port
  • SECC metal 19″ rackmount chassis, also suitable for DIN rail mounting
  • LEDs indicate TxD and RxD for easy port monitoring and diagnosis
  • Installs as a standard Windows COM port
  • Automatic transmit and receive control for 2-wire RS-485 half-duplex mode
  • Built-in termination and biasing
  • Serial port protected with surge protection of 10kV
  • Easy plug and play installation and RS-422/485 device connection
  • High speed serial port with baud rate up to 921.6kbps
  • Non-standard baudrates supported
  • Supports Windows XP to 10, Server 2000 to Server 2016 (WHQL certified)
  • Supports Linux Kernel 2.4 and above
  • Supports Mac OS X 10.9 and above, driver signed by Apple

USB to 16 Port RS232/422/485 USB-16COMi-RM

USB to Serial 16 and 32 Ports

USB to 32 Port RS232 USB-32COM-RM





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