There was a nuance. The USB whistle was inserted into the connector behind the back of the monoblock in the middle and the sensor was stupid. I did not understand what the problem is. Slowed down and did not get where he directed immediately and accurately. Jumped over. At first I wanted to return. I read the comments on the same black clave, of which there are many on the market, and someone there suggested that behind the back of the TV monitor, it can be stupid. I really moved the USB connector to another one closer to the edge, and on the monoblock there are 4 such connectors in different places. and the sensor began to walk accurately. Of course, it does not hold out at all to a wired high-quality mouse, but in general this is no longer critical. All other pluses outweigh this one small minus.
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