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Edit by David Hodson

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[* black] A blemish on the smooth back of the new iMac appears to be a result of the thinner design.
[* black] SinceEven though there wasn't enough room for coolingare vents alongat the bottom of the iMac, as in previous generations, cool outside airrear case, our guess is drawn in through a ventthat the fan is somewhere in the rear casemiddle of the iMac—where it's fattest. These slots are probably the air inlets, while the ones on the bottom are exhaust.
[* black] SinceEven though there wasn't enough room for coolingare vents alongat the bottom of the iMac, as in previous generations, cool outside airrear case, our guess is drawn in through a ventthat the fan is somewhere in the rear casemiddle of the iMac—where it's fattest. These slots are probably the air inlets, while the ones on the bottom are exhaust.
[* black] Hiding above the Apple logo, we find the small dual microphone grates.
[* black] ''It's listening; it's always listening…''
[* black] Dual microphone technology has been utilized in mobile devices for years to cut out background noise during phone calls. Now, the same idea is being applied here to improve sound quality during FaceTime chats.