This extension is very convenient to deport at least 1 of 2 ports to the screen, handy for easily plug in my USB external hard drive 3.
No need to do acrobatics to go plug it into the back of the PC. (Or ending up on all fours on the floor)
I was hesitant because of the cable length, but output is much higher than the classic USB2
For against my external hard drive is a classic not SSD HDD, so I can not tell if we can achieve the maximum allowed by the USB 3. But between connected via USB2 and USB3 port via this extension, I spend wholesale 36Mo / s to about 90MB / s)