Astrotek All-in-One Dock Thunderbolt USB-C 3.1 Type-C to HDMI+USB3.0+Card Reader+RJ45 Gigabit LAN+TypeC PD Function for Macbook Pro USB-C to HDMI Converter 4K Vidieo Output Gigabit Ethernet SD Card Reader USB3.0 Hub One cable for Video & Data - Just one single USB-C cable to transfer data, connect to monitor with HDMI devices - Eliminates the hassle of connecting multiple cables for video & data separately. - 1000Mhz Gigabits Ethenet support - SD Card Reader support User Interface - Input - USB-C x 1 - Output - HDMI x 1, USB3.0 Type A x 2, SD Card x 1, Ethernet x 1 Resolution: - Single Display - HDMI 3840x2160@30Hz Physical Characteristics: - Colour: Silver - Dimentions: 117 (L) x 47 (W) x 16 (H) mm System Requirement - USB-C Ports with DP alt Mode, Windows 10 and above, Chromebook and Mac OS Sierra (only supports single display) Warranty: 1 year