Since my notebook has only 2 USB interfaces, I bought a 1 – 4 hub, but when you plug it in, I find that sometimes only one of the interfaces can be used, the other is not available, and it is estimated that it may be a reason for insufficient power supply. What should I do? Is it possible to ... Read more

Whit the development of the market needs, front and rear lens dash cam launched by more and more merchants get more attention. Why? Mainly because 70% of the traffic accident is relative to rear-end collision. Most of the drivers noticed that the front lens can't record the rear condition, and ... Read more