The stylish 23-in-1 memory card reader/writer is the perfect solution for people who use several different types of memory cards. This USB 2.0 compliant device is compatible with PCs and Macs and requires no external power source. The compact design makes this reader/writer extremely portable. The 23-in-1 card reader/writer auto-detects card type when cards are inserted and allows you to copy data from one inserted card to another. A status LED shows which type of card is in use. Hot swappable slots allow you to remove and insert cards at anytime. The 23-in-1 card reader/writer works with CF (type I/II), SM, MultiMedia Card, XD, Memory Stick, Memory Stick Pro, IBM Microdrive, SD, Mini SD, T-Flash Card, Smart Media, MMC, MMC-II, RS-MMC, Memory Stick Duo, Memory Stick Pro Duo, Memory Stick MagicGate, Memory Stick MagicGate Pro, and Memory Stick MagicGate Duo. Features: USB v2.0 specification (up to 480 Mbps/sec) Supports 23 different card types Hot-Swappable Read Speed 4.3 Mbps + Write Speed 1.3 Mbps + Status LED Detachable USB cable included Compact design Supported Memory Cards: CF (type I/II) SM MultiMedia Card XD Memory Stick Memory Stick Pro IBM Microdrive SD Mini SD T-Flash Card Smart Media MMC MMC-II RS-MMC Memory Stick Duo Memory Stick Pro Duo Memory Stick MagicGate Memory Stick MagicGate Pro Memory Stick MagicGate Duo Works with Windows 98SE, Windows 2000, Windows XP, Mac OS 9.2 or higher