Hello friends. İ am newbie here. i experiance a wheird problem, sxt 5ndr2 lite 5 my friends device. The device sometimes 100mbps sometimes when i plugged in 10mbps. Warrantied device. I sended the local dealer but theyr saying ; customers faulty setup. I think my friend set the device without grounding and when a lightning storm or voltage unstabilities device did died ethernet port? Any helps are usefull. I tried net install but i cant setup boot server and manual ips how can i re work that device? On the motherboard the device which chip or capacitor causes that problem? Note that: device sometimes 10 sometimes 100 mbps. Device not bricked. I upgrage firmware 6.38 to 6.42.10 long-term.