My computer is not directly under the table lift. That's why I need an extension (2.8m benütze BIGetec). When I connect with this extension to USB 3.0 I get a blue screen. USB 2.0 operation is "limited". Sensitive devices such Scyte 3FS-2 does not work in spite of power supply to hub with keyboard and mouse! Conclusion chic part way too expensive and not really suitable for USB 3.0. VII it works on another computer better.