A:AnswerGood question. Yes, this keyboard/mouse combo is compatible with the all in one computer. It connects via USB. The computer has USB ports.
I hope this helps.
A:AnswerNo. That click is a physical click from the mouse, not a digital sound from your computer. There are mice out there you can get that have softer clicks
A:AnswerI purchased this product end of March 2016 at Best Buy.
The box says HP Classic Desktop Wireless Keyboard + Mouse.
HP Product Number: LV290AA#ABA