A quick inspection of the side of the MacBook Pro with Retina display reveals loads of upgrades:
Two (!) Thunderbolt ports
The first of two USB 3.0 ports
A standard 3.5 mm headphone jack (boo)
The right side of the MacBook houses an SD card reader, the second USB 3.0 port, and a full-size HDMI output.
Both sides feature air induction vents for the new cooling system—but more on that later.
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