Add a serial RS232 port to your desktop computer or laptop via USB. With the 0.9 m long ICUSB232SM3 USB to serial adapter cable, you can connect serial DB9 RS232 devices to your Mac, laptop, or desktop computer through a USB port, as if the computer had a built-in DB9M port. Unlike traditional USB to serial adapter cables that perform the conversion on the DB9 side, the ICUSB232SM3 from StarTech.com features a converter chip on the USB side. This USB-side conversion allows for the use of much longer serial DB9 cables than the conventional ones, which are limited to 4.5 m (over 15 m is possible if needed). The easy-to-install and user-friendly USB to serial adapter provides an affordable solution for bridging compatibility gaps between modern computers and older serial peripherals.