A:AnswerFor HDMI you need a video card that has multiple outputs. You might have to use something like a DVI to HDMI conversion cable to use a 2nd one of these with the video card.
A:AnswerHi! It can be adjusted and have 4” (10cm) or alike. You can change the sight of angle and it will get more vertical or diagonal but it won’t change the altitude.
A:AnswerYes it is. That motherboard comes with an onboard HDMI out, and it has also a DisplayPort out. So you can use this monitor in addition to another monitor with the Inspiron Desktop 3020.