The SBAC-US30 USB Reader-Writer supports those with PCs not equipped with an ExpressCard slot. The SBAC-US30 is recognized by PCs as a Mass Storage Class, no special driver installation is required except for the SxS UDF driver needed to recognize UDF formatted memory cards. The SBAC-US30 is powered by USB bus, so no AC adapter is required. The SBAC-US30 provides PCIe Gen2 support. Highlights include One ExpressCard Slot, SxS Card Reader, SuperSpeed USB 3.0 Interface, PCIe Gen2 Support. Card Reader is powered over USB interface - no AC adapter required.