Dual Profile PCI Express to ExpressCard Adapter. "Share your ExpressCards with your desktop computer! This innovative PCI Express card allows both 34 and 54 form factor ExpressCards to be inserted into a PC to provide access to wireless aircards and other add-on ExpressCard based cards that would typically only be accessible with a notebook computer. A cost-effective and hassle free way to use any feature provided by available ExpressCards, such as wireless Internet connectivity, or the addition of USB, FireWire, Serial, eSATA ports etc. For true versatility, this card offers a dual profile design for installation in virtually any design of computer case, including micro ATX and mini ATX designs and is compatible with Microsoft Windows 2000 XP/2003 and Vista(TM)"