This Professional Card Reader for CFexpress Type B and Type A and SD, Supports Memory Card Data Transfer. Transfer High-Resolution Images and Video Recordings To Your Computer Faster and More Efficiently, With Fast USB 3.1 Gen 2 Data Transfer Rate Super-speed 10 Gbps. No Additional Power Supply is Required, and it Also Comes With 5V USB C Charging Port To Solve The Problem of Insufficient Power Supply for Some Devices. Interface:USB3.1 Gen 2 Speed:10Gbps Support System:For XP/7/8/10/ for OS 10.6.2 above/ for Linux Fedora FC8 above Support for CFexpress Memory Card Type B and Type A, for SD Memory Card Colour:Gray Material:Aluminum Alloy Package Contents: 1 * Card reader 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.