Adds one SD & microSD card reader and three USB-A ports to your Mac, Windows, Linux or other USB-C laptop - USB 3.1 Gen 2 Hub supports USB 3.1 Gen 2 data transfer rates up to 10Gbps Provides direct access to your SD memory cards or microSD cards for data storage & transfer - Compact, portable design with an extended attached host cable of 9.8' (25 cm) - USB C Adapter Hub is bus-powered with no external power required - USB Type C Hub supports plug-and-play installation with no drivers required