You might be wondering what the difference between a USB flash drive and a pen drive is.
A USB flash drive is any flash-based storage device that can be plugged into a PC or Apple computer. A pen drive is a type of USB flash drive that is a portable “memory stick.”
Pen drives are small, whereas a USB flash drive can range in size from a pen drive to a larger collection of interconnected drives. So, essentially, a pen drive is always considered a USB flash drive, but not all USB flash drives are pen drives.