The highest resolution supported by the NEC NP-PA550 is 1920 x 1200 (WUXGA). That's over seven times the resolution of a 640 x 480 (VGA) projector, which is the most common resolution supported by multimedia projectors of this age and type. 640 x 480 (VGA) is also supported by this NEC projector. In addition, this multimedia projector support graphics resolutions 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) graphics resolution is actually the best supported resolution across all projectors of this age and type.
A 640 x 480 (VGA) graphics resolution is the worst supported resolution across similar types of data projector.