A:AnswerKeyboards and Mice, as you put it, connect to the tower not the monitor. The monitor that I bought came in all black. The logos on the back also glow when it's on.
A:AnswerThe monitor comes with a stand, power cord and a Display cable.
Your tower has to have a display port. Or you will have to buy a converter to HDMI.
A:AnswerRafael,
The display port cable is less than 1.5 meters. It is a nice monitor and even better if you can get it on sale price. I do recommend it.