Product parameters: USB-C Hub: 12-in-1 USB-C Hub with Ethernet / RJ-45 Port, Type-C PD Charging Port, 2 USB 3.0 Ports, 2 USB 2.0 Ports, 2 HDMI Video Outputs with Reader Resolution 4K, VGA and Micro SD and TF cards. SD card slot and slot for TF card can be used on the hub at the same time. The microphone / audio connection is extremely compact and elegantly designed. 4K Ultra HD output and triple display: Mirror or extend your screen with the HDMI port of the USB-C adapter and play 4K UHD or Full HD 1080p video directly to your HDTV, monitor or projector for a visual feast similar to a movie. Triple display: one HDMI1 output display, one HDMI2 output display, one VGA output display, but only Windows system supports MST, Mac OS no. Change screen shortcut: Windows + P. that The triple display makes it easy to manage multiple applications. Reliable and lightning-fast data synchronization: Two USB 3.0 ports support transfer speeds of up to 5 ranges. Two USB 2.0 ports with 480 Mbit / s transmission speed. Due to the interference of the wireless connection USB 3.0 radio frequency, it is recommended to connect the USB 2.0 port on the other side of the USB 3.0 port. Wide Compatibility: Compatible with the latest laptops and smart devices with USB-C ports: Mac Book 12 / Pro, Mate Book X, mi air12.5 / 13.3, Google Chrome-Book 2016, etc. on Windows 7. Works with / 8 / 8.1 / 10, Mac OS X