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This may sound like a dumb question, but I would like to know the difference between an usb pen drive & a flash pen drive? Is a flash drive better than an usb drive? And thirdly, is a 256 mb usb = 128 mb flash drive? 
Diffrence between an usb pen drive & a flash pen drive?
It's the same thing,it's called a flash drive bcuz it uses flash memory & it's a USB drive cuz it uses the USB interface.
A
Ecjactly as said by dIgItaL_BrAt
The USB pen drive uses flash memory hence its a flash drive.
There are usb drives that dont use flash memory but they have a larger footprint and cannot be called a pen drive.
If its a pen drive then it has to be using flash memory.
The USB pen drive uses flash memory hence its a flash drive.
There are usb drives that dont use flash memory but they have a larger footprint and cannot be called a pen drive.
If its a pen drive then it has to be using flash memory.
H
Thank you very much guys.