Description: hub (5-in-1): extend one 4K UHD HDMI port, two Supper speed USB 3.0 Ports, one SD Memory Card slot and one TF memory card slot from one /Thunderbolt 3/ Type C port 4K video to HDMI Adapter: mirror or extend your screen with USB C hub HDMI port and directly stream 4K UHD @ 30Hz or full HD 1080P video to HDTV, monitor or projector Super speed USB 3.0 ports(at full-speed): allow you to connect keyboard, Mouse, hard drive, etc to MacBook Pro, up to 5Gbps data transmission speed, down compatible with USB A 2.0 and below. Because HDD/SDD needs more power, so this adapter only allow connect 1 HDD/SSD and this adapter won't support USB Super drive. Convenient to card reader for /Type-C/Thunderbolt 3 devices to access files from SD/TF card reader, perfect for photographer or designer, etc Aluminiun case design(space Gray), perfect for new laptops with port, such as 2017 MacBook Pro, 2015/2016 retain 12 inch MacBook, Dell XPS 13, HP spetre x2, etc. Specification: Color: grey Material: aluminum alloy Interface: type C to HDMI + SD + TF + 2x USB3.0 USB: USB3.0 HDMI: 4K Package Includes: 1 x Hub