Specification: Card Slots: 2 in 1 Type: CFExpress Card Reader,SD Card Reader Installation: External Applicable memory cards: CFexperess Type B card, SD3.0 card Transmission rate: 10Gbps Shell material: aluminum alloy Output port type: USB C/USB A Power supply: USB 5V±5% power supply Supported systems: for , for MACOS10.6.2 or above for Linux Fedora FC8 and above systems, for Android systems Different batches may have color differences, which does not affect use. Color: silver gray Material: aluminum alloy Package Contents: 1 X Card Reader 2 X Data Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. express card reader palm size, easy to put in pockets and school bags, work at any time in the outdoors, mountain tops and other places, let photography become a pleasure.The all-metal design allows the CFexpress Card Reader to maintain both good heat dissipation and long-lasting use. CFexpress reader comes with 1 USB C TO USB C Cable and 1 USB C TO USB A Cable, supporting 10Gbps high speed read and write, designed to be compatible with all USB type C and USB A device. CFexpress cards type b reader strongly compatible with CFexpress type B and SD Card(SD, SDXC, SDHC, -MMC), supports maximum capacity of CFexpress card up to 2TB. USB 3.2 Gen 2 CFexpress Reader Compatible with /7/8/8.1/10/11, MacOS and above without driver. The dual-slot CFexpress card reader is compatible with both CFexpress (Type-B) and SD cards, making it the perfect card reader for photographers to carry around. No more hassle of switch between numberless card . Provide great convenience for those who love photography or videography and use CFexpress card. USB 3.2(USB 3.1 Gen2 ) technology supports maximum transfer to 10Gbps(1250MB/s) for the CFexpress memory cards(backward compatible with USB 3.1 ). With the LED indicator, you can easily monitor the connection status of the cfexpress type b reader.