CentOS - Apr 2016 - virt-manager virtual USB disk unavailable option

Hi,

I have installed virt-manager 1.3.2 and I want to create a virtual USB disk
(not USB  host passthrough) but unfortunately I don't see that option when
I try to add a new storage hardware. I have another PC with virt-manager
0.9.5 and Linux Mint and I have that option and it is working perfectly.
My CentOS version is: 7.2.1511

Thanks in advance
<https://www.google.com/search?q=host+passthrough+usb&spell=1&sa=X&ved=0ahUKEwibzOfu7vfLAhUomIMKHaDnBasQvwUIGigA>