[. . . ] Acer LCD Display Quick Start Guide Important Note: This product can only operate with the attached power accessories. [. . . ] Quick installation Complete the following steps for quick installation (see the figure): Assemble the seat of the display Take out the seat out of the box and place it on a flat table. Take your LCD display out of the carton and assemble the display and seat along the rail. You will hear a click sound when the display and seat are engaged correctly. Connection to PC Make sure that the power supply of your PC is turned off and the power plug is removed. Connect and fasten both ends of the signal cable to your PC host and LCD display, respectively. If your LCD display has built-in speakers, connect the audio cable attached to the display from the sound card output of your PC to the audio input on the back of your LCD display. [. . . ] Press this button for the display to optimize the position, phase and clock pulse automatically when OSD is not started. 5 Auto 6 Speaker 2 [. . . ]