Yes, it is possible to install a different M-ATX motherboard in an OMEN 870.
Yes, it is possible to install a different M-ATX motherboard in an OMEN 870.
I checked if an AM4 motherboard could fit inside the case. HP often uses proprietary components, so I wanted to confirm compatibility. Since I can swap the standard PSU for an EVGA 650w, it should be fine. The board I was considering was a GIGABYTE B450M DS3H, which is listed as an M-ATX model on their site. I’m flexible with other options as long as they work.