Made of aluminum alloy, it has efficient heat dissipation and is wear-resistance and oxidation-resistance.With the compact size, it is easy to carry.The card reader has four card slots supporting XQD, CF, micro-SD, TF card simultaneously reading and mutual data transfer.U disk, mouse, keyboard and mobile hard disk can be connected to 2 USB3.0 interfaces.It is compatible for Windows, for MacOS and for Linux systems.It is plug and play and no driver is required.Item Name: Card ReaderMaterial: Aluminum Alloy, ABSUSB Version: 3.0Compatible Systems: for Windows, for MacOS, for LinuxCompatible Memory Cards: Micro-SD/TF/CF/XQDWorking Temperature: -5-35 Degree CelsiusWorking Humidity: 5-90%RH (No Condensation)Features: Heat Dissipation, Portable, Large CompatibilityCable Length: 80cm/31.5" (Approx.)Size: 100mm x 62mm x 10mm/3.94" x 2.44" x 0.39" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Card Reader (Others Not Included)