2 Computer button (cycles through connected computer sources)
3 Video button (cycles through connected video sources)
4 Numeric buttons (enter numbers)
5 Auto button (automatically adjusts position, tracking, and sync settings)
6 Aspect button (selects the image aspect ratio)
7 Num button (when held down, switches numeric buttons to number function)
8 Menu button (accesses projector menu system)
9 Arrow buttons (move through on-screen options and control wireless mouse functions)
10 Enter button (selects options and controls wireless mouse functions)
11 User button (customizable for different functions)
12 Page up/down buttons (control presentation slides)
13 E-Zoom +/– buttons (zoom into and out of the image)
14 A/V Mute button (turns off picture and sound)
15 Help button (accesses projector help information)
16 Freeze button (stops video action)
17 Volume up/down buttons (adjust speaker volume)
18 Pointer button (activates on-screen pointer)
19 Esc button (cancels/exits functions and controls wireless mouse functions)
20 Color Mode button (selects display modes)
21 LAN button (cycles between network and optional Quick Wireless Connection Key sources;
PowerLite 1880)
22 USB button (cycles through connected USB sources)
23 Source Search button (searches for connected sources)
Parent topic: Projector Part Locations
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