Re: Marvell Gigabit controller stuck at 100Mbps

simple way to test
1 just plug same cable to laptop and check speed ( don't change any setup)
if laptop works on 1gbps
2 boot from live cd from NAS ( Any win 10 live cd-dvd-USB works)
if not going on gbps check network port pins are straight and clean ( use alcohol and q-tips to clean it.
If Live cd works then some thing wrong set in network card drive advance settings.