If you've got some space on your desk, you should consider investing in a hard disk case. With one of these compact devices, you can access a hard drive using any PC. One feature of the best hard disk cases will allow you to insert a memory card or another hard disk, and with the push a button you can make a full backup. You don't even need to be connected to a computer. Cheap hard disk cases will simply connect your hard disk to your computer via a USB cable to you can transfer files or backup your data.