The keys for copy and paste are on the left side, which improves work efficiency. I've been using it for about a year. I cleaned it with disinfectant wipes and an air duster, but some of the letters on the keys have faded. Please check the photos. Please understand that this is a used item and consider purchasing it. #SKB-MM2BK #Keyboard Connection type: Wired Key switch: Membrane Keyboard layout: Japanese