USB 2.0 speeds (and more) click here
USB2 will operate at all three USB speeds and is backwards compatible with all USB devices.
Why exactly do you suspect it's operating at a lower speed than "hi-speed"?
Surface Pro (2017) vs Surface Pro 4
20 groundbreaking 3D animation techniques
How to mine Bitcoin on Mac
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.