The initial ad, which I didn't read when I finally opened the box, 3 months after I ordered it and wasn't yet ready to switch systems, read; wired mouse and keyboard. I received battery operated wireless of both of them (yuk). AND, one of the batteries in the mouse was fused to the inside of the mouse. Called Amazon, followed their lead, was told to return the entire thing, and the nightmare ensued for close to three hours - I kid you not. First, with a lovely, young rep, who kept checking with her Supervisor in S. Africa. I had a lot of patience.  Then with a rep in India. I was losing patience. Then with another rep who disconnected the call. Finally, I spoke with a Supervisor who sent word to the seller with a reply possibility for me to replace the mouse, and IN THE MEANTIME, since I'd been following the initial lead to return all of it, that meant cancelling my tech support, but that too was fixed in the end. Waiting on Always Lower Than Apple LLC to respond about the mouse. Other than that, the system itself seems to be working perfectly fine, and as with all new Apple Macs, there is much to learn. In the end, big thumbs up.