Get the StarTech USB Adapter for your next computer build, or to extend the capability of your current PC. It lets you connect every type of serial device to your USB-enabled computer, whether it is for RS232, RS422 or RS485 communication. This 2-port USB adapter with com retention re-assigns the retained serial COM port values to the devices plugged into different USB ports in the event of disconnection. It also comes with an LED indicator to display power activity. This USB serial adapter is backward compatible with USB 1.1 to support legacy devices. The rugged screw-lock USB port prevents the cord from being accidentally disconnected. This adapter is wall-mountable and RoHS compliant. This product is wall mountable for space-saving convenience.