Toshiba's Portégé Z20t-B is a 12.5-inch convertible ultrabook that's targeted firmly at well-received products such asLenovo's Yoga 3 Pro. Unlike Lenovo's product, the Portégé Z20t-B's screen and keyboard detach, allowing you to work in true tablet mode.
Toshiba Portégé Z20t-B-107 review at ZDNet
Toshiba Portégé Z20t-B-107 review at ZDNet