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We are airing the differences in these lightweight notebooks, and the last thing to come to the table is the I/O board.

With a light touch, we remove the I/O board for a better look at the headphone jack, a USB port, and the MagSafe 2 port.

A passing glance at the board reveals the same Cirrus Logic 4208-CRZ HD audio codec found in this year's 13" model (likely similar to the 4207).

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