A:AnswerThere are 4 standoffs (two long, two short) to replace existing screws (inside the circle on the back).. It's a 75mm x 75 mm pattern.
It's a super-heavy monitor, so make sure your mount/arm can handle the weight.
A:AnswerFrom Viotek's marketing material: "With dual-input picture-in-picture (PBP), you can connect and view input from two sources on a single screen without degrading the original image quality."