Apple ColorSync Display - Manual (Page 14)

Do you need to install a video card?
The monitor is preadjusted and supports the following scan ranges:
m horizontal scan rate of 30–80 kilohertz (ColorSync Display 17" [16.1" VIS]);
30–94 kilohertz (ColorSync Display 20" [19" VIS])
m vertical refresh rate of 40–120 hertz (ColorSync Display 17" [16.1" VIS]);
48–120 hertz (ColorSync Display 20" [19" VIS])
In addition, the monitor works at the following VESA (Video Electronics
Standards Association) standard modes:
Vertical refresh rate (hertz)
Resolution 17" (16.1" VIS) 20" (19" VIS)
640 x 480 60–85 60–85
800 x 600 56–85 56–85
1024 x 768 60–85 60–85
1152 x 870 60–75 —
1280 x 1024 60–75 75–85
1600 x 1200 60 75
The ColorSync Display 20" (19" VIS) monitor also works at the following
Macintosh standard modes:
Resolution Vertical refresh rate (hertz)
832 x 624 75
1152 x 870 75
These are preassigned resolutions; your computer may support other
resolutions within this range. See the manual that came with your computer
or video card to determine which resolutions are supported.
For more information on factory-preadjusted settings and other technical
information about your monitor, see Appendix B, “Technical Information.”
To use your monitor, you need compatible video circuitry built into your
computer or a compatible video card installed in your computer.
6 Chapter 1