https://techcrunch.com/2018/06/04/asus-new-zenbook-pro-features-a-5-5-inch-touchscreen-instead-of-a-touchpad/

The ASUS event today at Computex in Taipei, Taiwan had three main hooks: health, ergonomics and, most importantly, second screens. The headliner was the premium ZenBook Pro 14 and 15 (pictured above), the latest versions of ASUS’ premium notebook that feature a touchscreen where the touchpad would usually be

Meant to increase the laptops’ multitasking possibilities, the 5.5-inch ScreenPad functions as a second screen for things like messaging or apps including a calculator, a video and music player or calendar. It can also be used as a launchpad for apps on the ZenBook Pro’s main display or serve as a function command screen for Microsoft Office programs.