An Apple-1 computer sold for $500,000 at auction. Here's a look inside.

Little word of advice: Hang onto your Apple devices.

A working Apple-1 computer in a rare wooden case was sold at auction on Tuesday by John Moran Auctioneers, going for a cool $500,000. The original owner bought it from his professor in 1977 for a mere $650.

The first ever Apple-1 was created by Steve Jobs and Steve...