8 Port USB to Serial RS232 Hub - China USB to RS232 RS485 Cable

Industrial USB to RS485 Bidirectional Converter, CH343G, Multi

2-Port USB to RS-485/422 Hub - UC4852, ATEN Converters

How to Handle Common Issues with USB to RS-232 Adapter Cables

RS-232 128 Bytes Receive 384 Bytes Transmit Superior Build Quality:Housed in a rugged steel chassis with built in mountable flanges, the serial adapter hub is perfect for installations in labs, warehouses, or heavy machinery.

Coolgear USB 2.0 Serial Adapter Box Industrial 8-Port RS-232 FTDI Chip High-Speed 921.6Kbps

The difference between RS232, RS485 and USB serial interfaces

USB to Serial Adapter, 9-Pin Male, Provides transmit & Receive Lights, FTDI Chipset

Add extra COM ports to your laptop or desktop computer, quickly and easily. This USB to RS232/422/485 serial adapter lets you connect to your serial

8 Port Serial Hub USB to RS232/RS485/RS422 Adapter - Industrial USB 2.0 to DB9 Serial Converter Hub - IP30 Rated - Din Rail Mountable Metal Serial Hub

DriverGenius USB to RS232 Serial Adapter Cable - USB RS232 DB9 Adapter

Industrial 8 Port RS485 Hub (with USB to Serial)