4x 422/485 USB

Professional USB to 8 port serial adapter control box supporting 8 DB9 Male connections is designed for serial port expansion via you host USB bus connections. Installs as a Windows COM port with full RS232 signal.

USB-4COMi-M USB to Quad RS-422/485 Serial Adapter for Windows 10, 8, 7 and Server 2003/2008 is housed in a metal chassis to protect the item. External dip switches to easily configure the item.

Optical isolated Quad RS-422/485 Serial Adapter is designed to make serial port expansion quick and simple. Connecting to a USB port on your computer or USB hub, the USB Serial Adapter instantly adds four RS-422, or RS-485 serial communication ports to your system.