Simplecom CR309 3-Slot SuperSpeed USB 3.0 Card Reader with Card Storage Case Built-in storage case for memory cards Built-in storage case for 3 different size cards_ SD, MicroSD and CF, that can protect your valuable memory cards from damage or loss. Built-in and foldable USB cable Convenient for storage or travel, you can fold the USB cable when not in use, and no need to worry loss of USB cable. Plug Play, hot-swappable It’s driverless and plug play, makes for easy installation and no software is needed, Windows and Mac compatible. SuperSpeed USB interface up to 5Gbps 10 times faster than USB 2.0, make it faster to transfer large file or the high definition movie, also backwards compatible with USB 2.0. Features 3 Slot Card Reader with memory cards storage case Supported SD, SDHC, SDXC, microSD, microSDHC, microSDXC and CF Cards Built-in and foldable USB cable, convenient for storage or travel Built-in storage space for 3 different size cards, protect cards from damage or loss SuperSpeed USB 3.0 interface up to 5Gbps Backwards compatible with USB 2.0 LED indicator for memory card read and write activity Plug and Play, no driver software required USB powered, no external power required Compatible with Windows and Mac Specifications Transfer rates_ SuperSpeed up to 5Gbps SD Slot_ SDXC, SDHC, SD, MMC, RS-MMC MicroSD Slot_ Micro SD, Micro SDXC, Micro SDHC, UHS-I CF Slot_ CompactFlash Type I Storage Case_ 1x SD, 1x MicroSD, 1xCF Dimensions_ 81x53x15mm Weight_ 45g Power/activity LED_ Yes Material_ ABS plastic Operational temperature_ 0 – 45°C Working humidity_ <85% System Requirements_ Compatible with Windows and Mac