Discontinued item so I'm very happy to receive a like new one that works. I've used this brand ergonomic keyboard for many years and I'm unhappy it's not being made any longer, so being able to purchase this one is wonderful.
I am delighted with my used Microsoft 4000 keyboard. My old one konked out. This model has quadrupled in price. I like this particular model and was able to locate one that looks almost new on eBay.