Extend dual USB-C ports of your laptop to 1 Thunderbolt 3 port + 1 Type-C port + 1 4K HDMI port + 2 USB 3.0 ports + 1 SD port + 1 MicroSD card reader port, basically answering almost all of your connectivity requirements of multiple devices USB 3.0 ports, with data transfer speed up to 5Gbps The HDMI port supports a resolution of 4K*2K @30Hz Plug and play, no need to install the driver, convenient and fast Small and exquisite, portable design, easy to store SupportWindows XP/Mac OS9X/7/8/10 systems Compatible withMacBook Pro 13'' 15''(not supportMacBook Pro 2018) Package included: 1 x Dual USB-C Hub Type-C to Thunderbolt 3 + Type-C + 4K HDMI + USB 3.0 x 2 + SD + MicroSD Card Reader Adapter Other items not included