Features: Multi-function: 3 Ports USB 2.0 Hub Card Reader for MS/MS PRO DUO, SD/MMC, M2, Micro SD(TF card). (Note: It reads only one memory card at a time.) Avoid the hassle of carrying multiple card reader adapters, and you can transfer photos, music, data with this combo. Lightweight and portable. Low power consumption, it is suitable for desktop & notebook PC. Supports USB 2.0, compatible with USB 1.1, and runs at 480Mbps. System support: Windows 98SE / Me / 2000 / XP, Linux2.4.X and Mac OS 10.0... Powered by USB port, no external power needed.Specifications: Color: Blue USB 2.0 port: 3 Read cards: Supports MS/MS PRO DUO, SD/MMC, M2, Micro SD(TF card) Cable length: Approx. 50cm / 1.6ft Item size: 7.5 * 7.5 * 3cm / 2.95 * 2.95 * 1.2in Item weight: 71g / 2.5oz Package size: 20.1 * 13.2 * 4.2cm / 7.9 * 5.2 * 1.7in Package weight: 118g / 4.2ozPackage list: 1 * 3-Port USB 2.0 Hub & Card Reader