Ideal for using your Express Cards on a PCAllows the use of additional Express Cards on your laptop Also for laptops that dont have an Express Card slot Works with USB (Universal Serial Bus)-based Express Card devices only USB 2.0 connection Requires Windows 2000 XP Server 2003 Vista Works with USB (Universal Serial Bus)-based Express Card devices including Wireless Wide Area Network modems such as CDMA EV-DO GPRS etc flash memory flash card adaptors security legacy IO PS2 serial parallel optical disc drives GPS receivers & more