1. USB3.0 SD cards. The SD card reader can read almost all types of memory cards directly without affecting the transmission speed. It supports SD / MMC / RS-MMC / Micro SD / TF / Micro memory cards. 2. Simultaneous reading / writing: Simultaneous reading and writing on both cards to avoid the hassle of unnecessarily pulling out and plugging in again. Supports memory cards with a capacity of up to 2 TB. Fast transfer speeds enable the transfer of photos / films at the moment. 3. Full compatibility Plug and Play, No software or drivers required. The SD card adapter is compatible with Windows, MacOS, Linux and MAC OSX. 4. Design Strives to make the most attractive products. The card reader, simply a room-gray piece made of milled aluminum, is well dimensioned and compact. The SD card adapter is not only functional, but also aesthetically designed, with high-quality materials and a distinctive design feeling. 5. Portable design. The portable, slim size of the mini card reader makes it easy to insert in your travel bag.