IT (1)

HI,

 

do you have issues with USB 3.0 and Virtualbox 5.1.x  and Windows Guest 7 / 8 ?

 

Then install this Intel USB drivers and your problems are solved.

 

https://downloadcenter.intel.com/download/21129/USB-3-0-Driver-Intel-USB-3-0-eXtensible-Host-Controller-Driver-for-Intel-7-Series-C216-Chipset-Family