upgrade to usb 3 on laptop



You can't. It's not just the 'port', but also the circuitry on the motherboard.
 
You can get an add-on expresscard that has usb 3.0 but you physically cant change the motherboard from usb 2.0 to 3.0. The number of connections/pcb traces on the board are different and the nothbridge chip on the motherboard is completely different.
 


how i get an add-on expresscard???

 


Does your laptop have an expresscard slot?
If so, you buy one...
If not, you're out of luck with that avenue.