plug and play external devices are simply that, you plug them, the computer detects them and you can use it right away. Basically the same as Plug and Play for internal hardware.
The computer can be running while you plug the hard drive in and the computer will recognize it and start installing drivers, if needed. Then you can use, or "Play" with what you just plugged in.
Portable & External Hard Drives.
External NTFS drives will work with no problem with Ubuntu. Just plug in and use it.
You could get a USB external hard drive and plug it in
If you are talking about the slots in the computer that you plug an external hard drive into, they are called USB ports.
So far as I know, all you would need to do (if plug n' play doesn't work) is to reformat the drive.
Yes absolutely! Most external hard drives have support for as many computers as youd like. just plug-in and go.
The WD Elements has several highly rated external hard drives to choose from, another highly rated brand is the My Passport line of external hard drives.
hot swappable hard drives are drives that can be taken out and replaced while the computer is running. mainly found on servers and network attached storaged devices. All external usb/firewire drives are hot swappable in that you can unplug an external and plug in another external without a problem. This term could also refer to an external hard drive that has hot-swappable drives. For example, you can pull the hard drives out of the external replace them on the fly.
External hardware is hardware that is connected externally to a computer using its peripheral ports. Examples are VDU, keyboards and mice.
'Plug and Play' relates to the USB ports on computers and some other electronic devices. A USB (Universal Serial Bus) port is a socket in which various external devices (printers, keyboard, mouse, external flash and hard drives) can be plugged in and removed without having to first switch off the computer.
Western Digital and SeaGate are the top manufacturers of hard drives, internal and external.
Simpletech produce portable external hard drives. These range from small USB sticks, to larger external hard drives. Simpletech also produces mini versions of the portable hard drives