I bought this keyboard online to use at work, but it's a foreign model, so the key locations are different from what I'm used to. I couldn't get used to it, and ended up switching back to my familiar keyboard after only half a day, so I'm selling this one. I like the feel of the keys. The response is good. The sound isn't too loud, so I thought it would be fine to use at work. I wish I had a little more perseverance. There are no instructions or box. It's a USB type that plugs into a PC.