The NP-PA621X supports a maximum resolution of 1920 x 1200 (WUXGA). That's over seven times the resolution of the most frequently found supported graphics resolutions of 640 x 480 (VGA) (which is also supported by this data projector). In addition, this projector support supported graphics resolutionss of 1024 x 768 (XGA), 1280 x 1024 (SXGA), 1400 x 1050 (SXGA+) and 1600 x 1200 (UXGA) and 800 x 600 (SVGA).
A 1920 x 1200 (WUXGA) supported graphics resolutions is actually the best supported resolution across all 5000:1 contrast ratio data projectors that have been available for around the same time as the NP-PA621X.
A 640 x 480 (VGA) supported graphics resolutions is the worst supported resolution across similar types of data projector.