This industrial 4 port USB to serial RS232 adapter with DIN rail clips converts a single USB port into four RS232 serial ports, enabling you to connect to, monitor and control your serial devices. Built for Industrial Environments Featuring rugged metal construction, with sturdy wall-mounting brackets and top-hat DIN rail clips (included), this FTDI USB to DB9 RS232 hub provides versatile mounting options and a robust solution for both harsh industrial environments and simple desktop installations. Convenient COM Port Retention This USB powered DB9 serial converter also retains assigned serial COM port values once connected, allowing the same values to be automatically reassigned to the USB serial hub ports. Versatile Functionality Designed to be versatile, this USB to serial adapter cable is perfect for IT administrators looking to add legacy functionality to newer notebooks, PCs and servers that lack an integrated RS232 port. It can also be used for connecting, monitoring and controlling industrial/automotive sensors and equipment, as well as connecting bar code scanners, receipt printers and other point of sale devices. This 4 port USB to serial RS232 adapter is backed by a StarTech..