Not surprisingly, Acer's jumping on the quickly-expanding Ultrabook bandwagon here at CES 2012, with the Aspire S5 being the initial out of the chute. It's a 13.3-incher that'll check it at 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 for correct measure. We're ...

Not surprisingly, Acer's jumping on the quickly-expanding Ultrabook bandwagon here at CES 2012, with the Aspire S5 being the initial out of the chute. It's a 13.3-incher that'll check it at 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 for correct measure. We're ...