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Question:

Help! The The LCD monitor flashes, but the screen is still black

Garage electric door installation need to pay attention to what the problem

Answer:

There is a connector, it does not matter, as long as the line wrapped insulation can be assured with the use.
The diameter of the protective tube depends on all the cross-sectional area of the cable. It is usually required that the total cross-sectional area of the cable passing through the cable can not be greater than two-thirds of the area of the hole in the protective tube.
USB extension cable is too long about 6 meters, the resistance will be too large. Usb line length seems to be 5 meters, 4 transit, 127 devices. But there is a usbhub with power.

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