I have the Logi MX Keys keyboard and the Logi Ergo M575 Trackball Mouse. BOTH connected with the Logi unifying USB dongle. My PC is less than 36" away from both my Logi items and the connection drops MANY MANY times each day. I usually have to wait a coupe of minutes for them to reconnect or turn them off then back on again to reconnect them. This is getting very irritating as I am a professional Draftsman and attempt to use these 11 hours a day. I always keep my entire system updated. I am getting ready t o buy another brand and see if this continues to happen. I have been a Logi customer for years and have sworn by the Logi trackball since it came out. I am not happy.