StarTech.com 1S1P 54mm ExpressCard Serial Parallel Combo Card with 16550 UART EC1S1P55254 This Parallel/Serial ExpressCard features a high performance single-chip design that optimizes speed, reliability, and power, while reducing CPU load by as much as 48% over conventional adapters that use a 'bridge-chip' Full width 54mm ExpressCard is a perfect fit for business laptops and ensures a long life without damage to the card, or your notebook The included breakout cable spreads out the 2 ports, to avoid crowded connections 1x 16C450/550 compatible UART serial port, and 1x IEEE 1284 Parallel port Supports baud rates up to 128000bps Parallel data rates up to 1.5Mbps 256 Byte deep transmit/receive FIFO Breakout cable included