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