Microsoft Arc keyboard replaces squarepants design with lightweight curves

The Arc keyboard, debuted by Microsoft at the Consumer Electronics Show in Las Vegas today, updates the stodgy PS/2 keyboard with a slim, light, gracefully curved aesthetic. The keyboard weighs under a pound and is designed to be usable both on a desk and in your lap on the couch.

Instead of cables, the Arc comes with a tiny wireless USB adapter that stows in the keyboard’s underbelly. There’s a matching Arc mouse, too, that folds up to half its size for travel.

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Best Buy has exclusive dibs on the Arc for its launch on February 21st. Best Buy’s price: $59.95 for the keyboard, $49.95 for the mouse.

Check out our CES 2010 coverage.