Before hooking it up, I needed to get a better graphics card. I'm not a gamer so I don't need one of those high-priced power-hungry cards, but my old NVidia GeForce GTX 745 was insufficient. I upgraded to a 1050 Ti with 4GB of memory. It's priced reasonably, it's not too big for my motherboard (a 2015 HP) and it works with motherboard power. I connected with DisplayPort 1.4. The cable for this came with the monitor.
Installing the monitor was made harder by the skimpy documentation. You'd think they would do better. But I did figure it out. The screen is beautiful and I love all that real estate. I can have two or even three documents up at once.