Removable media

In computer storage, removable media refers to storage media which are designed to be removed from the computer without powering the computer off.
Some types of removable media are designed to be read by removable readers and drives. Examples include:
Optical discs (Blu-ray discs, DVDs, CDs)
Memory cards (CompactFlash card, Secure Digital card, Memory Stick)
Floppy disks / Zip disks
Magnetic tapes
Paper data storage (punched cards, punched tapes)
Some removable media readers and drives are integrated into computers, others are themselves removable.
Removable media may also refer to some removable storage devices, when they are used to transport or store data. Examples include:
USB flash drives
External hard disk drives