ACER Unveils World’s Thinnest Ultrabook with Aspire S5 13.3

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ACER announced the world’s thinnest ultrabook, the Aspire S5 is a 13.3-incher that ways under three pounds, offering up Instant On functionality, a magnesium-aluminum alloy cover (in Onyx Black), HDMI / USB 3.0 / Thunderbolt (!) ports and an SSD.  It should ship in Q2 in 2012. other than that nothing else.