Fangrui Product Details Multiple Ports For Simultaneous Use Interfaces Are No Longer Scarce Supports 4 Ports For Simultaneous Use, No Need For Repeated Plugging And Unplugging Keyboard And Mouse Connection No Delay Or Lag Keyboard And Mouse Feedback Is Faster, Improving The Operating Experience Full Chip Upgrade High-speed Transmission Is More Stable Chips Do Not Interfere With Each Other Aluminum Alloy Shell Quick Heat Dissipation To Avoid Overheating Strong Heat Dissipation To Avoid Overheating 100w Pd Fast Charging Keep Your Laptop At All Times Specifications: B: A Tow Four Colour:as Shown Material:aluminum Alloy Package Contents: 1x Docking Station 1x Chinese And English Manual Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Real Thing. The Measurement Allowed Error Is +/- 1-3cm.