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QUESTION & ANSWER: Q: USB camera does not recognize. A: 1. Poor contact of the computer interface will cause the computer to not recognize the driver when camera is plugged in. Try to choose a USB location with a firm interface when using. 2. There will be a driver installation process when the first time you plug in. Don't move or unplug the USB port during this process to avoid the computer driver recognition error causing the system to be unrecognized; 3. For desktop computers, try to choose the rear USB interface that recognition success rate will be higher than the front interface; 4. If it shows Unknown Device"" when connected, plese unplug the camera and reconnect. Some unstable interfaces may require more attempts." Q: USB camera display: flickering and lines A: 1. The power supply of the computer interface is unstable [This may be caused by factors such as unstable voltage and large current ripple], change to another interface or change computer connection; 2. Camera connection line failure [the probability of a new machine is very low, because it has gone through several testing procedures before leaving the factory. Q: The computer device manager has shown that the camera is connected normally, A: But the video software does not display the picture" Find the corresponding camera device in the software, open it then you can see it. Q: USB camera screen display delay and freeze A: 1. The video software you used restricts the resolution and frame rate of the camera, which causes the viewing to freeze. Generally, you can find the corresponding setting items in the software to adjust it; 2. Some software may compress the resolution and frame rate of the camera, resulting in viewing delay and freezing when network is not stable enough. It is recommended that you use the camera with some high-definition video software such as Zoom, Facebook or Team,ect