USB stick
USB drives are being made into a multitude of different shapes for promotional purposes.
If you need to block usb access so that only certain users can view and modify data, you need to get a good usb drive blocking tool from a trusted site.
There is a potential risk from malware on CDs, floppy disks and USB drives, especially if these have any pirate software.

SMART Vocabulary: related words and phrases

Computer hardware
3-D printer
active matrix
agnostic
alt-
associative memory
backlight
Bluetooth
chip
console
flat screen
microcomputer
multi-client
multitasker
netbook
non-mobile
number pad
plug and play
trackball
underscore
VDT