Tel: +44 (0)1202 861512



® 2017 Roalan Ltd | Gleneagles House, 31 Riverside Road, West Moors, Dorset, BH22 0LG, England, UK | Registered in England  4591605, VAT GB 474 4377 22 | FSB member 1408917

Terms and Conditions | Cookies are used by this website for security reasons only.

Home Products Price Lists Technical Help Company Reps Required How To Buy Contact




Add To Basket

We accept Amex, Mastercard and Visa via secure server site.

Free delivery in the UK. Export from £5.00. See here for more details.

UK same day delivery available. Call for a quotation.

You can order by phone:

 +44 (0)1202 861512

For quantity orders quotes or trading accounts please use our submission form.

Price Exc. VAT



When you buy from Roalan you will be treated well. You will get a high-quality product which will not cost you a fortune and you will get more satisfaction out of your purchase than you expected.

USB to  4 Port  RS232/RS422/RS485 DB9 serial adapter metal case DIN-Rail

Serial USB >> USB Pro >> USB 4COM PLUS

The modern USB-COM Plus adapter connects four  RS232 or RS422/485 devices to your PC by a USB 2.0 Full Speed port. The serial port and USB are ESD protected, compliant to IEC 61000-4-2 (8kV contact/16kV air discharges

The serial port supports RS232, RS422 and RS485 in Full-/Half-Duplex operation mode. The operation mode of the serial port is easy configured by one DIP switch. The configuration also activates built-in RS485 termination if required, no jumpers needed. St

The USB 2.0 Full-Speed enables serial data rates of up to 3Mbps in RS422/485 or 1000kbps in RS232 modes. The device also allows every non-standard bitrate up to 960 kbps.

All USB-COM Plus devices can be used to expand the serial ports for NetCom Plus Device Servers.

View Full Specification

USB to 4 Port Serial RS232/RS422/RS485