Apple’s Time Capsule is a back up device that works wirelessly with Time Machine in Mac OS X Leopard. It will automatically backs up everything so you don’t have to worry on losing any files. It is also a full-featured 802.11n Wi-Fi base station. Every computer in your house can work off a wireless network at blazing speeds. And they can back up wirelessly to the same Time Capsule. It is a backup solution and also works wireless hard drive which means Tiger, Windows XP, and Windows Vista can access Time Capsule directly from the wireless network for exchanging and storing files. The Time Capsule is available in 500GB or 1TB and they priced at $299 and $499 respectively.