A:Answer The Lenovo Stick 300 is a computer in a small package and needs a keyboard and mouse to control it. It does not need to be THIS keyboard.
It only has 1 usb port so either you need a USB hub, a keyboard, and a mouse (any standard USB keyboard and mouse will work) or a 2 in 1 device such as the Lenovo Multimedia Keyboard Remote (N5902).
If a little clutter is ok, I'd suggest to save some money and be more versatile with a USB hub, a standard keyboard, and a standard mouse.
