The StarTech.com ICUSB232 1ft USB to DB9 RS232 Serial Adapter Cable lets you connect DB9 RS232 serial devices to your Mac or PC laptop or desktop computer through a USB port, as though the computer offered an onboard DB9M connector. A cost-effective solution that bridges the compatibility gap between modern computers and legacy serial peripherals. Backed by a StarTech.com 1 year warranty and free lifetime technical support.