Hello. I have a 500Mbps plan with a ONT ZTE F618 router that the ISP provided with a TP-LINK G3468 gigabit card. The problem is the network card won't work past 100Mbps, as only the 100Mbps light turns on and the speeds are as slow as they were without the network card. I have installed the drivers manually from the website as I don't have a CD-ROM, for windows 10 64-bit but nothing seems to work. The ZTE F618 has a 100/1000Mbps interface and it's supposed to work at high speeds. I'm using the ethernet cable that came with the router but I've also tried a different one. Also I have tried changing speed & duplex to 1GB full duplex but no luck. What could I try?
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