External Monitor in Extended Desktop or Video Mirroring Mode
With the display set to 1152 x 768 and millions of colors, an external VGA monitor supports the following resolutions
mUp to millions of colors: 640 x 480, 640 x 870, 800 x 600, 832 x 624, 1024 x 768, 1152 x 870, 1280 x 960, 1280 x 1024, and 1600 x 1200
mUp to thousands of colors: 1280 x 960, 1280 x 1024, 1600 x 1200, 1792 x 1344, 1856 x 1392, and 1920 x 1440
Choosing a resolution greater than 1152 x 768 in video mirroring mode causes the image on the external monitor to scale down (not take up the entire screen) to match the 1152 x 768 resolution of the internal display.
External Monitor in Display Closed Mode
When the PowerBook display is closed, an external VGA monitor supports the following resolutions
mUp to millions of colors: 640 x 480, 800 x 600, 1024 x 768, 1152 x 870, 1280 x 960, 1280 x 1024, 1600 x 1200, 1792 x 1344, 1856 x 1392, and 1920 x 1440
mUp to thousands of colors: 1792 x 1344, 1856 x 1392, and 1920 x 1440
External
An external NTSC video device or TV supports the following resolutions
mUp to millions of colors: 640 x 480, 720 x 480 (NTSC only), 800 x 600, 832 x 624, and 1024 x 768 at 60 Hz