1PT ExpressCard to RS232 DB9 Serial Card The EC1S232U2 ExpressCard RS232 Serial Adapter Card (USB-based) (16950 UART) adds an RS232 (DB9) serial port to your ExpressCard-equipped laptop, enabling you to connect an RS232 serial peripheral device such as a plotter, digital signage device, receipt printer or bar code scanner through an available ExpressCard slot. This USB-based ExpressCard supports RS232 serial data transfer rates up to 460 Kbps and eliminates the need to upgrade serial peripherals to more modern interfaces (e. g. USB, etc. ) for the sake of host compatibility, saving both expense and hassle. Backed by a StarTech. com Lifetime warranty and free lifetime technical support.