MSI. This all-in-one has a sliding 23-inch HD LED display that moves to reveal a hidden keyboard underneath. The model being shown had a manually sliding screen, and reps were unsure about whether it would have an electric mechanism should it ever get to market. The mechanism certainly didn't seem close to ready, and it couldn't even close fully. Regardless, we're intrigued by the idea and managed to grab some video of the keyboard being removed. See it in action after the break.
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MSI Jellow concept PC hands-on