What comes in an Apple.

I should probably elaborate. An all-in-one motherboard is one that has a lot of devices that are usually on expansion boards, such as modems, sound boards, video boards, NICs, etc. This is generally a bad idea- it makes replacing the motherboard far more expensive than it needs to be, harder to replace (if you're trying to replace it with an identical one), and ruins some of the fun of computing.

There are instances of devices that used to be separate being put onto the motherboard to good effect (for example, disk controllers and serial ports), and the trend seems to be toward further integration, so I imagine all-in-one motherboards will become the standard.

And when that happens, I'll wax nostalgic for the "good ol' days", I'm sure.