What is a Thumbnail Drive
A thumbnail drive also called a portable hard drive or Jump Drive is a relatively small device that gives you the ability to take your personal files with you. This device works on the same principle as a floppy disk does, but can hold much more information. Because this device is very small, you can attach it to your keychain or easily store it in a purse.
To use a thumbnail drive, all you need is a computer that has a working USB port that you can plug the device into. Once the thumbnail drive is recognized by Windows, it will appear as a new drive in your Windows Explorer:

You can use it just like you would use any other disk drive. You can drag and drop files to it and open them up on other computers.
December 2nd, 2006 at 3:04 am
Is there a write-protect switch in a thumbnail drive that can turn it on or off just like a floppy? If so, where it it located?
December 2nd, 2006 at 9:27 am
Yes, you can purchase PNY drives at Best Buy that come with this feature. They probably do sell other brands with this feature. This option does not come with a lot of hard drives, so it should be listed in the product description of features.
Hope that helps.
Tom
December 27th, 2006 at 6:51 pm
[...] You can store your backups on CDs, DVDs, removable hard drives, or keychain thumbnail drives that are easy to remove and carry with you. Even floppy disks can still be used if you have a floppy drive. [...]