A:Answerit is the outside dimensions after mounting.
The screen is just a hair over 12 inches. It is 14.67 after the base is put on.
I hope this will fir your space.
A:AnswerYes, you'll need the keyboard, monitor, and mouse. You will also need an HDMI cable to connect the monitor to your laptop, and depending on your laptop's ports, a USB-C to HDMI adapter.