"HIGH GRADE CIRCUITRY": Quality Components and High Grade Circuitry for Optimal Performance. "PCI EXPRESS": A High-Speed Serial Computer Expansion Bus Standard for Faster Performance. "PLUG & PLAY": Automatically selects IRQ and I/O address. No Hassle. "ON BOARD 256 BYTES FIFO CHIP": High Grade FIFO Chip for Transmission Purposes "VERSATILITY": Supports a variety of Serial devices such as Bar-Code Reader, Digitizing Tablet, External modem, ATM Finger Print Identification, Infra-Red Transceiver, ISDN T/A, Multi-Modem Dial-up Server etc. DRIVER CD INCLUDED Driver Installation CD Included for Your Convenience