Tips to increase usb flash drive speed :
1.Connect your pen drive to pc via USB
2.Open my computer then right click on the the drive letter of your pen drive, click properties.
3.Click on the hardware tab, select your pen drive then click properties.
4.In the new window click policies tab..
5.there you can find two options : "optimize for quick removal " and "optimize for performance".By default, it works on the first one.Change it to the second one.
ie; select "optimize for performance" then click OK.
After doing the first step,
format your pen drive with NTFS file system simply by selecting format option in the drop down menu then select NTFS and format.