Dual Slot Design:Compatible with CFexpress Card (Type-B) and UHS-II Card (Backwards compatible with UHS-I and SDXC/SDHC/SD cards) .
High Speed: USB3.2 Gen 2 theoretical transmission speed 10Gbps; Transfer from both card simultaneously at full speed 1.25Gb/S; Backward compatible with USB 3.1 and USB 3.0 up to 5Gbps.
Compatible Multi OS:Windows 7/ 8/ 8.1/ 10/ Linux/ MAC OS
Package Included: 1x CFexpress & UHS-II SD4.0 Card Redaer; 1 x USB-A TO C Cable ;1 x Type C TO C Cable
Notice: This product supports two cards to exchange data with the computer at the same time.At times, due to insufficient current from the USB port it is connected to (especially a USB-A port) the device cannot be recognized (does not happen when connected to USB-C port). To solve this problem, just unplug one of the cards.