How to get monitor to perform stated refresh rate?

[Sicilian]

Just today I got an MSI Pro MP273A monitor that supports up to 1080p and 100hz. Using what I figured out to be an iVoler 5-in-1 Steam Deck Dock though with an extra display port, I attempted to set the resolution to 1080p100fps and I got a black screen. I fixed it after a hassle, but I want to know if there is a step I missed so gaming mode can perform at 100fps/hz like the monitor says it can? Ideally still at 1080p and I can just adjust if needed in different games.

[ReBoot]

First & foremost, does this dock actually support refresh rates >60/s? DisplayPort isn't exactly one specification, it's a family of specifications (actually it's one specification in different versions developed over the years). So see if that dock supports that at all.

[Moshy]

It's advertised as supporting 4K 60Hz or 1440p 120Hz. 1080p at 100Hz should be absolutely fine.