This product rendering released by Microsoft shows Surface, a 9.3 millimeter thick tablet with a kickstand to hold it upright and keyboard that is part of the device's cover. It weighs under 1.5 pounds. The device is part of the software company’s effort to compete with Apple Inc. and its popular iPad tablet computer. (AP Photo/Microsoft)

Associated Press
This product rendering released by Microsoft shows Surface, a 9.3 millimeter thick tablet with a kickstand to hold it upright and keyboard that is part of the device's cover. It weighs under 1.5 pounds. The device is part of the software company’s effort to compete with Apple Inc. and its popular iPad tablet computer. (AP Photo/Microsoft)
This product rendering released by Microsoft shows Surface, a 9.3 millimeter thick tablet with a kickstand to hold it upright and keyboard that is part of the device's cover. It weighs under 1.5 pounds. The device is part of the software company’s effort to compete with Apple Inc. and its popular iPad tablet computer. (AP Photo/Microsoft)
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