Asus VS229HA - Monitor.introduction; Front View;  

1-2 Chapter 1: Product introduction
1.4 Monitor introduction
 
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HD Webcam
HD Webcam
VK228H
VK228S/VK228T
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VS229
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1. , , button:
• Selects a desired preset mode. ( , )
• Exits the OSD menu or goes back to the previous menu when the OSD
menu is active. ( , )
• Automatically adjusts the image to its optimized position, clock, and phase
by pressing this button for 2-4 seconds (for VGA mode only). (
, )
2. ,
• Decreases values or moves your selection left/down.