This is a PCMCIA type II card providing one RS232 serial port. Velocity megabaud data transfer rates and the 128 byte deep FIFOs, coupled with 1Mbit/sec line drivers, deliver uncompromising performance for your notebook. Being mobile no longer limits your options. Drivers for all popular operating systems are included. The card is covered by Brainboxes lifetime warranty and support. For further product details, visit www.brainboxes.com.