Eiki LC-X2U Owner's Instruction Manual page 35

You can select a mode from MAIN MENU display among computer 1, computer 2, video 1, video 2.
1. Press the MENU BUTTON and the MAIN MENU DISPLAY dialog box will appear.
2. Press the POINT LEFT/RIGHT BUTTON(s) to select Computer or Video and press the SELECT (REAR CLICK)
BUTTON. Another dialog box MODE DISPLAY will appear.
3. Press the POINT DOWN BUTTON and a red arrow will appear.
4. Move the arrow to the mode you want (computer 1, computer 2, video 1 or video 2) to use by pressing the
UP/DOWN
POINT BUTTON(s) and then press the SELECT (REAR CLICK) BUTTON.