Add an RS232 serial port to a notebook or desktop computer with this Plug-and Play USB (Universal Serial Bus) adapter cable This versatile device ships with a 9-pin connector, & a 25-pin RS232 adapter for a variety of connection options Integrated 3ft cable means that you can connect directly to your serial devices Plug-&-Play/ Hot-swap support enables you to add & remove this adapter without having to reboot the computer The ICUSB232DB25 USB (Universal Serial Bus) to RS232 DB9/DB25 Serial Adapter Cable (M/M) lets you connect 9-pin (DB9) or 25-pin (DB25) RS232 serial devices to your laptop or desktop computer through a USB (Universal Serial Bus) port, as though the computer offered an onboard serial port. The integrated 3-foot (0.9 meter) cable allows it to be connected directly from the serial device to the computer without requiring additional cables. A cost-effective solution that bridges the compatibility gap between modern computers & legacy serial peripherals, this high quality USB/RS232 Serial Adapter cable ships with a DB-9 to DB-25 adapter for connection to varied serial equipment. Backed by a Star Tech.com 2-year warranty & free lifetime technical support. WhatÂ’s in the box 3ft USB (Universal Serial Bus) to RS232 Cable DB9 to DB25 Serial Adapter Driver CD Manual