I bought this pen drive 8 years ago with 32gb capacity, windows os support till windows 7, windows xp, cost of the pendrive is 2300, compared to now its verycost at that time, while transfering data it transfers and copy data very slow. I am sad to have this pen drive with high cost. At the time of buying there was no other companies providing pen drives so I bought this with low features.at that time I suggest my friends no to buy this but they bought and suffered too. Now a days usb 3.0 is in trend which has high speed in transfering files but this suppoerts usb 2.0 so slow copying.