Tripp Lite by Eaton 4-Port RS-422/RS-485 USB to Serial FTDI Adapter with COM Retention (USB-B to DB9 F/M)

Connects Up to Four 9-Pin Serial Devices to Your Computer, Laptop or Tablet's USB-A Port This USB to serial converter turns your computer's USB port into four DB9 ports capable of connecting RS-422 and RS-485 serial devices, such as modems, handheld scanners and GPS systems. No external power source is needed. Just connect the included USB cable between the U208-004-IND and your computer, and insert the included CD into your computer's CD drive in order to launch the driver. You'll be able to configure and share data among point-of-sale equipment and other serial devices. LEDs indicate when serial data is ...