Keydrive

Nowadays, are more and more used the USB flash memory drives (also know as keydrives or USB keys), that Plugs & Plays (driverless) via standard USB 2.0 interface. It has up to 2 GB storage capacity.

1. USB flash drives weigh about the same as a car key – in fact, some USB flash drives are so lightweight that hypothetically it could take 14 ants to carry one!
2. USB flash drives are about the size of a stick of gum.
3. If you share a computer, USB flash drives are a great way to store personal information – use them instead of the computer's hard drive.
4. According to some manufacturer's specifications, USB flash drives can maintain data for 10 years – in that same period you’ll probably have to replace your computer’s hard drive three times.

It is bootableable from BIOS too. So it can diagnose system problems without going into operating system.