There are two ways to expand the projection screen. One is our common double screen computer playing method, which uses HDMI cable to connect the computer and LED screen; One is to complete the wireless extended screen projection through the wireless screen projector.

how to expand the projection

1. Connect the wireless projection box to the LED screen through HDMI line;

2. Insert the USB / HDMI button of the wireless projector into the computer;

3. Turn on my computer, find the key of the wireless projector at the position of the mobile disk, double-click it, and change it to the extended projection (the factory default is the mirror projection), press the button, and the extended projection of the computer to the LED screen is completed (similarly: the extended projection can be changed to the mirror projection next time).

dual screen computer playing method: the computer host is extended and projected to the LED large screen

1. There are two interfaces on the computer host box, generally one VGA and one HDMI (but now the computer has two HDMI interfaces) to connect the computer monitor and the LED large screen respectively;

2. Click on the front page of the control panel to open “appearance and personalization” and enter the setting menu;

3. Split screen is related to the screen, so find the second “display” and directly click to open the pop-up dialog box of “adjust screen resolution”;

4. Now there is only one screen to change the appearance of the display. Click “connect to projector” below to pop up a dialog box;

5. In the pop-up dialog box, there are four options: computer only, copy, expansion and projector only. Click and select the third “expansion” icon, which also corresponds to the two screens and functions;

6. Now it can be seen that there are two screens for changing the appearance of the display, and the parameters of these two screens can be set;

7. Move the cursor to the second screen and directly click the left mouse button to select. You can set the parameters of another display. You can set the display mode, resolution, direction and several options of multiple displays. The next function is to set this display as the main display. In some monitoring rooms, the LED screen is used as the main screen and the computer screen is used as the secondary screen. The traditional mode of


is troublesome. The resolution on the LED screen is wrong, and it is easy to get stuck, black edge and other situations.