Transcend Express Card Reader for SD/SDHC/SDXC/UHS-1 (TS-RDF1) Fully Compliant with PCI Express Revision 1.1 specification Compatibility to any laptop with an ExpressCard/34 slot Compatible with the new SDXC (Secure Digital eXtended Capacity) & UHS-I (Ultra High Speed) standard Supports Plug and Play and hot swapping RoHS compliant products Connection bandwidth up to 2.5Gbits per second