There are PC-Card USB 2.0 cards.
If the Winbook didn't have USB at all it's a fair bet the slot is PCMCIA and that explains the problem.
Sorry if that's wrong and your laptop has PC-Card but in such instances we must be exact. There is one other reason and that's a bum install of the OS. Many can't find motherboard and chipset drivers or know such are required.
I have a old Laptop (Win 2000)with no USB slots on it. But it does have a pcmcia slot but this does not seam to be working.
I installed a NEC pcmcia 4 port USB 2 card into the slot, the laptop said "found new hardware" then nothing. Looking in dvice manager it says it is working fine but when I put a usb stick into the card nothing, no power to my stick.
So I am a little lost any any help will be most welcome.