ThunderboltTM 3 certified - ensures compatibility across all devices and an optimal user experience Adds a wide variety of ports to your MacBook Pro (13/15") instantly. Includes - one USB-C Thunderbolt 3 port, one USB-C port (USB 3.1 Gen 1), two Type-A USB 3.1 Gen 1 ports, one 4K@30Hz HDMI port, one SD slot, one Micro SD slot USB-C Thunderbolt 3 port supports Power Delivery (PD) protocol enables charging of your 13" (61W) or 15" (87W) MacBook Pro at full speed from PD compatible power adapter, provides up to 5K video resolution, up to 40Gbps data speed (Thunderbolt) and USB 3.1 up to 10Gbps data transfer rate HDMI port supports up to 4Kx2K@30Hz video resolution, extend your desktop across multiple screens Provides 3 USB 3.1 Gen 1 ports (x1 USB-C, x2 USB Type-A) with data transfer rate up to 5Gb/s Memory card reader support..."Memory Card Supported: SDMemory Card Supported: SDHCMemory Card Supported: SDXCMemory Card Supported: microSDMemory Card Supported: microSDHCMemory Card Supported: microSDXCMemory Card Supported: TransFlashMemory Card Supported: MultiMediaCard (MMC)Host Interface: USB Type CHeight: 0.4Width: 1.1"Form Factor: ExternalWeight (Approximate): 1.44 ozPackage Contents: Thunderbolt 3 USB-C Hub HDMI with Card Reader PD Adapter - Space Gray User Reference Guide Environmentally Friendly: YesEnvironmental Certification: RoHSCountry of Origin: ChinaLimited Warranty: 2 YearPackage Contents Thunderbolt 3 USB-C Hub HDMI with Card Reader PD Adapter - Space Gray User Reference Guide "