I don’t have enough ethernet ports on the back of my router so i recently bought an ethernet splitter. When it got here i plugged it in and it was working perfectly fine for my ps5 but my cat8 to my pc wouldn’t connect. I checked the splitter and it says cat7. Would i have to order a cat8 splitter for my cat8 cable to work or is there another solution?
You got conned by marketing. First of all, you need a switch and not a splitter. Maybe it’s just your terminology, so share what you bought and we can help. If it actually is a splitter, especially since you say it says Cat7, it has to be some POS junk that should be returned. As for Cat8 cables, anything you can buy on Amazon that is Cat7 or Cat8 is probably garbage. You should only ever use Cat6 at home. I would replace those as well and pick up a CableMatters or Monoprice Cat6 patch cable in whatever length you need. Stay away from flat cables as well.