Closed Lid Mode: Pismo supports “lid closed” (or clamshell) mode, which leaves the built-in display off and dedicates all video RAM to an external display. To used closeed lid mode, your ‘Book must be plugged into the AC adapter and connected to an external display and a USB mouse and keyboard (you might also want to consider external speakers). Power up your ‘Book until the desktop appears on the external display and then close the lid. Your ‘Book will go to sleep, but you can wake it by moving the mouse or using the keyboard. The built-in display will remain off, and the external monitor will become your only display. Since all video RAM is now dedicated to the external monitor, you may have more colors available at higher resolutions. The Pismo is designed to run safely in closed lid mode, but if your Pismo runs hot (perhaps due to a G4 upgrade or high ambient temperatures), you may want to open the lid when in lid closed mode: The screen will remain off and the computer will more readily vent heat from the CPU.
To resume use of the internal display, you need to disconnect the external display, put the computer to sleep, and then open the lid. This will wake up your ‘Book and restore use of the built-in display.

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