I have an average off 200-400h/s (depends a bit on what I'm doing on the computer

)
Currently I am using low level port.
Do you think I should switch? Also what would be different if I would use a high power port?
You can check you exact H/s if you press the 'H' key on your motherboard whilst you have the XMR miner running, the website isn't accurate. It should look like this:
https://i.imgur.com/SnGZwka.pngBut at 400H/s I suspect you should be on the medium (5555) port. You can ask them directly
http://labbinarymining.com/contact.html I did on discord, and they told me to set it to High.
No idea about what the difference between the ports is though.