Zoom 2985 USB 56K Modem utilizes the capabilities of a computer’s Universal Serial Bus for the fastest and most convenient modem hookup yet! Using the included USB cable, just plug the Zoom/FaxModem 56K USB into your PC USB port. You don’t even have to shut down the computer. The new modem will then be installed automatically and you’ll be ready for fast, reliable access to the Internet, and other dial-up modems. Configuration is automatic and without the potential conflicts of an RS-232 serial port or an internal modem. The Zoom/FaxModem 56K USB doesn’t even need an external power supply. It gets its power from the USB port itself.