| 1 | Source Search button (searches for connected sources) |
| 2 | Enter button (selects options) |
| 3 | Vertical keystone adjustment buttons (adjust screen shape) and arrow buttons |
| 4 | Help button (accesses projector help information) |
| 5 | Esc button (cancels/exits functions) |
| 6 | Volume control buttons, horizontal keystone adjustment buttons (adjusts screen shape), and arrow buttons; on the PowerLite S27, these buttons are labelled Wide and Tele and adjust the projected image size, rather than the audio volume |
| 7 | Menu button (accesses projector menu system) |
| 8 | Power button and light |
| 9 | Status, Lamp, and Temp (Temperature) lights |