Serial I/O PC PCMCIA (PC Card Type II) card from Socket adds a high-speed RS-232 serial COM port to your mobile computer and maximizes your connectivity with speeds up to 921 Kbps. It works exceptionally well with both Windows- and Linux-based mobile devices. The unit includes a male DB-9 connector on a 12" detachable cable. It connects to modems, barcode scanners, magstripe readers, GPS receivers, digital cameras and other RS-232 serial devices. These battery-friendly cards are the world's most power-efficient add-on serial adapters, extending the battery life of your PDA.