Summary: I BOUGHT IT FOR TO REPACED THE ONE I HAD BOUGHT FROM RADIO SHACK BECAUSE IT WAS ON SALE SAW BOUGHT IT AND BOUGHT IT REALATING THE WENT I TYPE THE KEY I PRESS WERE NOT
Summary: I use Logitech keyboards and mice on Macs to include this MK520 combo. This works right out of the box and the unifying feature seems to work fine, too.