PC-makers are showing off a range of new computers aimed at convincing users to upgrade after Windows 8 is released.
Microsoft's operating system features a touchscreen interface prompting manufacturers to restyle their laptops.
HP, Toshiba, Dell, Asus and Lenovo are among those showing off new products.
Efforts are split between models in which keyboards detach from screens, ones in which the keys remain attached but can be hidden behind displays, and traditional fixed clamshell designs.
The hybrid tablet/laptop concept had been championed by Intel at the Consumer Electronics Show earlier this year.
Apple - which makes the bestselling tablet on the market - later suggested that mixing the different types of computer together risked a situation in which "you wind up compromising in both and not pleasing either user".
But some analysts say Windows 8 is specifically designed to work in both modes, so the designs may make sense. The operating system has been scheduled for release on 26 October.
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