BUFFALO iBUFFALO Numeric Keypad for Mac USB Connection Slim Independent Keys Silver BSTK08MSV I am selling this as I no longer need it. I purchased it in 2020 and used it only a few times. I used it with a Mac. There are no malfunctions, and it works without any problems. It is a standard USB connection type. There are no major scratches or stains, but please note that there are some minor scratches and slight scuffs from use.