About Logitech Mk 345 Keyboard Mouse Set .Your product looks very high quality. The material quality is very good. But the connection constantly breaks. This ruins the whole usage experience. And three buttons cannot be pressed at the same time. For this reason, many games cannot be played. As a result, I regret buying this product. Even a cheap brand keyboard and mouse set that I bought 10 years ago gives much better performance than this product. I would like to state that I bought this product by trusting the Logitech brand.I don't think so, but any I would be very happy if this product could be made to work properly with an update. After all, thousands of people who buy this product are experiencing the same problems. Thanks in Advance