Description: 3 Ports USB 2.0 Hub Multi-Card Reader Combo Supports USB 2.0, compatible with USB 1.1, and runs at 480Mbps.Powered by USB port, no external power needed. Multi-function: 3 Ports USB 2.0 Hub + Card Reader for MS/MS PRO DUO, MMC, M2, (TF card) 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 and notebook PC Specification: USB 3 port HUB Combo Card Reader for MMC M2 MS This USB 2.0 memory card reader is the ideal companion for your digital media. Avoid the hassle of carrying multiple card reader adapters in order to transfer photos, music, data and more between multiple media platforms. Ideal for portable use on the road or at home with a desktop or laptop. Increase 3x USB ports Low Power Consumption, Suitable for Desktop &Notebook PC Support Memory Card: MS/MS PRO DUO/MMC/M2 (TF) Supports USB 2.0 compatible USB 1.1, runs at 480Mbps System support: For Win95/98/Me/2000/XP/win 7, Linux2.4andMac os8.5 Size: Approx. 75*48*24mm / 2.95*1.88*0.94inch Package Includes: 1 Piece of Card Reader Note: The hub can read only one card at each time, 2 or more card cannot be read simultaneously It does not Support CF/XD Card Powered by USB port, no external power needed