I forgot to talk about the DiskOnChip or DOC. The DOC is a 16MB memory drive. It can be formatted just like a hard drive can and will not be erased when the computer is turned off. The advantages of it are that you can put your operating system on the chip. Not only will you have more room on your hard drive, you will also have faster load times due to the operating system being on the chip instead of a slow mechanical hard drive. You can obtain DOC in sizes of 4MB up to 256MB.