pen drive
Pen drives, also known as jump drives, thumb drivers, and USB keychain drives. They all refer to the same thing, which is a small data storage device that uses flash memory and has a built-in USB connection, therefore flash drives don’t require a special disk drive to be used. Modern pen drives can store several gigabytes of data.
flash memory card
Flash memory cards are a device used for storing digital information. They are commonly used in many electronic devices such as digital cameras, mobile phones, laptop computers, MP3 players and video game consoles. They are small, re-recordable and able to retain data without power