USB C extends to 12 ports: With this expansion dock, you can easily expand Thunderbolt 3 / USB - C to multiple ports. 2 HDMI, 1 VGA, 2 USB3.0, 1 USB2.0, 1 USB - C, 1 U - C (charging only), 1 3.5mm audio headset port, 1 SD, 1 TF, 1 RJ45 Triple display: USB C to 3 displays. Support for 2 HDMI 3840x2160@30Hz , VGA 1920X1080@60Hz for extended mode and mirror mode on Windows and Mac OS systems. Note: Due to operating system limitations, all external monitoring images under macOS are the same. Only the Windows system can display different images on the extended monitor Faster transmission: The USB C hub has a built-in USB 3.0 port and a USB C port. Transmission rates of up to 5.0Gbps are more suitable for large file transmission. USB 3.0 can also be used to connect the keyboard and mouse. The SD/TF card slot supports reading up to 512 memory cards for easy reading of your data. Expansion Dock Design Saves Space: The expansion dock can be placed at the bottom of the laptop, effectively emitting heat from the laptop. Enjoy our brand 18-month warranty to make you feel at ease. If you have any problems when using this USB C expansion dock, just tell us, we will definitely solve it for you. Wide Compatibility: Plug and play, no need to install any software. This USB C dock is available for Thunderbolt compatible devices and is compatible with MacBook, MacBook Air/Pro, iMac/iMac Pro, Chromebook Pixel, Dell, ASUS, HP, Lenovo and more c laptops. Before purchasing the Thunderbolt laptop dock, make sure your laptop has a full Thunderbolt USB-C port.