Lots of advice, some good some meh.
Here's more. Isolating your system from ethernet noise is your goal. First an audiophile switch just before your system with a LPS and second an ethernet cable with filter like the ENO.
Don't believe the knuckle-heads that tell you non audiophile cables and switches are just as good.
I have English Electric, EtherRegen and SOtM switches in that order with LPS's. Two is better than one and three is better than two. I have the ENO Ag and 3 SOtM Ethernet cables with filters. And the EtherRegen and SOtM are clocked and while clocking locks the sound in you can achieve a lot with just one switch and filter in front of your system.