Going by the MAC addresses the first item is the HUMAX, the other two come back as something from the SHENZHEN GONGJIN ELECTRONICS CO. They apparently make all sorts of Communications equipment.
You could look here and see if you have something they make.
**edited by mod**
Agree the box is a HUMAX but that port has never had anything else plugged into it since I have had the HH6. Can i delete the ones I don't know
The bigger question would be how the got there.
yes i do have powerline adapters which is plugged into Port 1 to feed the HUMEX box
looking at the link as was suggested in the next post it could be the power line adapters.
It is your powerline adaptors. Switch them off and they will show as not active.