We bought 10 units of usb sticks during our trip to Hongkong last month. The usb sticks, which were sold cheap in the street market, has cute cases made of rubber with cartoon designs. The 10 pieces costs us around $5 only so I proceeded to buy even without the benefit of testing those electronic items. And when we reached home, not 1 of those 10 was working. In fairness, the usb stick looks okay with a micro card inside to hold the data. The only problem is it cannot be accessed by the computer.