Lenovo ThinkPad W700ds
If you need a second display on the go, your best option today is to connect to an external monitor. Back in the late 2000s, you could buy the Lenovo ThinkPad 700ds, a laptop with a 10.6-inch slide-out display. Yes, long before Razer’s Project Valerie or Asus’s dual-screen notebooks, Lenovo made a laptop with a 17-inch main display that could be expanded with a secondary slide-out display.
That’s only the start of it. This laptop had every gizmo and gadget available at the time, including an internal Pantone color calibrator and a tablet or digitizer (separate from the touchpad), that you could use to draw on the display using a built-in Wacom stylus. This thing would have made for an excellent solution for business professionals (or artists) who needed more screen real estate while traveling except that, for a laptop, the ThinkPad W700ds wasn’t portable. Like, at all. Actually, it was laughably massive, weighing 11 pounds and coming in at 2.1 inches thick.
