Product Dimensions: (L x B x H) 7.7 x 3.2 x 1 inches USB 3.0 Super Speed, data transfer speed of up to 5Gbps. Supports resolution up to 2K (1920x1080)@60Hz, delivering a incredibly clear video image to the connected display. Allow you to connect keyboard, mouse, U Disk, Hard Disk, thumb drive to MacBook Pro or other. Easy to use, Plug it and use.