Quickly adds an ExpressCard slot (USB-based) to USB equipped desktop or notebook computers allowing older systems to use the latest ExpressCard devices,Works with USB-based ExpressCard devices including Wireless Wide Area Network modems (such as CDMA, EV-DO, GPRS, etc.), flash card adapters, security, legacy I/O, optical disk drives, GPS receivers, and more,Important: This adapter only works with USB-based ExpressCard devices. PCI Express-based devices will not be detected