Manhattan 40-in-1 Hi-Speed USB 2.0 Multi-Card Reader/Writer Easily access media and manage content almost anywhere includes slot-to-slot read/write/copy and USB mass storage capabilities Compatible with Memory Stick, SecureDigital, MultiMedia and XD  no power supplies or adapters required Supports automatic card detection and data transfer speeds up to 480 Mbps Eliminates need for direct connection of media device to save battery power Windows and Mac compatible  hot swappable, Plug and Play