how long does apple hardware test take 2 run or where is my airport?

[modelamac]

Wifi is included in Macs to avoid running wires all over the place. Not all layouts are conducive to wired connections.

mrlynn wrote:
If you've got an Ethernet connection to your network, why do you need wifi? Do you move your iMac around? I have Airport turned off on my iMac 27". Ethernet is faster.

/Mr Lynn