For starters like myself experimented since I bought a new faster modem ,router combo far better synergy then separate units and less cables ,the motorola 8702
has docsis 3.1 which is 4 x faster then the older 3.0 I then put a 12 v Linear Power Supply which is also 8 amp capable from little green computer, I put a synergistic purple 4 amp slow blow 20 mm a nice improvement. Then a Ethernet converter switch with a 7 v LPS then fiber optic to a Sonore deluxe fiber back to Ethernet ,this being the end point I put the excellent 7 v , Linear Tube Audio -LPS with synergistic purple fuse ,you could use Hifi tuning fuses before the Sonore, being the end point you want your best ! Good sfp modules do count Little green computer sell the Finisar they are $200 a pair ,they are the best . Please note you will need 2 Quality Ethernet cables to truly get the most fidelity not $50, Ihave a AQ Diamond 💎,and a Jcat . The Jcat ref are very good as well as their usb but not cheap$$ . It cost me over $4k just to do this , but you can get a good starter package from little green computer , spend a minimum of $200 each for the Ethernet cables WWorld star light are a good buy and after market fuses you can buy when even ,use slow blow fuses ,they come with fast blow for stock fuses can vary up to 15%+ in accuracy and that’s why I say go slow blow so they don’t pop for aftermarket fuses very accurate and had one blow .