@@uhashton yes, actually you need at least 2 mouse on your pc, 1 the lamzu and 1 some cheap mouse. you connect the 4k dongle lamzu and pair it with your lamzu mouse, using the cheap mouse to move the cursor (because you need to unplug the 1k dongle lamzu the smaller one and there'll be no mouse to use the cursor). after that your lamzu can be upgradeable to 2k or 4k.