1,Made of aluminum alloy material, the hub is of high quality and durable. 2,With 7 expansion ports including HDMI (60HZ) and USB0 x 2 and PD fast charge and Type-c and TF card and Secure Digital Memory Card. 3,4K x 2K (3840 x 2160) HDMI port, backward compatible with 1080P, 720P, etc. 4,High-speed USB0 port, 5GB or S transmission rate, maximum power supply 5W. 5,PD fast charge port, 20V or 3A, support up to 87W power adapter (input). 6,High-speed type-c interface, maximum power supply 5W. 7,Secure Digital Memory Card or TF card slot: Secure Digital Memory card and TF card can work simultaneously. 8,Suitable for MacBook 2018 or 2017 or 2016, for Mac Book Pro 2018 or 2017, for iPad Pro2018, for NINTENDO SWITCH, for Chromebook, for HUAWEI mate 20 or mate 20 pro, for Samsung S8 or S9 or Note8 or Note 9, for HP Spectre or Pavilion, for Huawei Matebook, for Dell XPS series, for Mi Air. Hbu x 1 Interface Type: HDMI (60HZ) and USB 3.0 x 2 and PD Fast Charge and Type-C and TF Card and Secure Digital Memory CardHDMi Resolution: 3840 x 2160USB 3.0 Transfer Rate: 5GB or SApplicable Model: Suitable for MacBook 2018 or 2017 or 2016, for Mac Book Pro 2018 or 2017, for iPad Pro2018, for NINTENDO SWITCH, for Chromebook, for HUAWEI mate 20 or mate 20 pro, for Samsung S8 or S9 or Note8 or Note 9, for HP Spectre or Pavilion, for Huawei Matebook, for Dell XPS series, for Mi Air. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.