100% Brand New Support USB 1.1 & 2.0 High Speed Transmission Rates: 480 Mbps Support up to 8-256GBGB Memory Card Plug & Play, Hot-swap Slim Size & Portable Date Exchange for Mobile Phones, Computers, MP3/MP4 Players, PDA, Digital Cameras, etc. Support Micro SD or T-Flash Memory Card only. System Requirements: Windows 7/ ME/98/98SE /2000/XP/Vista, Mac OS X10.2 or later, Linux 2.4 or later Package: 3* USB 2.0 Micro SD TF Card Reader