Is it recommended to operate the laptop with the display lid closed? Closed lid is not good for coolingIt stands to reason that you would want to close the laptop's display lid once in a while when using external monitors and input devices. However: the cooling systems are expected to radiate some of the heat through the upper side of the base unit. This isn't a problem for a frugal use (e.g. watching a movie or word processing). However, if you keep the lid of the laptop closed under high load (rendering, compiling, gaming), this creates a heat buildup, which might over time damage either the display or keyboard (or both). For the keyboard, for example, the reliability of the switching mechanics can be affected by too frequent and too strongly pronounced hot/cold cycles. In extreme cases, discoloration of the display might also occur.Recommended actionIn the interest of a long product life, we recommend operating your XMG laptop with an open lid and sufficient ventilation.