Thanks, just trying to factor cost/effectiveness. USB switch is £20 which allows me to use my current keyboards and mice. Will see how both options work and return accordingly.
I think it's only one.. I've got my pc connected through dongle, and laptop over Bluetooth. that may help
Do I need to order extra unifying receiver for mac/pc? Guessing it only comes with one.
you can conmect 3 deviceas at time.. but obviously write(move mouse) only on one. you just switch between those three