StarTech.com USB to Serial Adapter - Optical Isolation - USB Powered - FTDI USB to Serial Adapter - USB to RS232 Adapter Cable - Add an RS232 serial port with circuit isolation to your laptop or desktop computer, through USB - USB to Serial

Compatible with Windows?, Mac OS and Linux Powered by the USB port - no external power adapter required COM Port assignments maintained across reboot Integrated 2500Vrms Optical Isolation Circuits Designed to make serial port expansion quick and easy 500W Bi-Directional Surge Protection Circuits 8-foot cable length for connecting to devices without having to be too close Integrated FTDI USB UART Chip Baud Rate up to 921.6 Kbps USB to Straight-Through RS232 Serial Adapter