In the absence of the second-level operation requirements of e-sports players, wireless mouse and keyboard have no significant delay, so there is no such thing as a technical bottleneck, and wireless keyboard and mouse in the absence of too many mobile office requirements, the convenience is not as high as imagined, and sometimes even not as fast as wired plug and use. Of course, the thought of the former USB flash drive as large as the transmitter has been integrated into the size of the nail, I am still very optimistic about its development trend.