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When I connect my computer directly to the modem using a cat 5e or cat6 cable it only connects at 100mbs. I am talking about the "link speed" (transmit/recieve) , not the upload/download speed. When I connect my computer directly to the router the link speed is 1000mbs so I know it's not the computer. I recently checked my download speed and it was only 95mbs and I am paying for 150mbs so I decided to try and figure it out and this is what I discovered. When I logon to the modem I don't have any options to reset it either. I think it might have been removed in a firmware update. Cox says I am getting the full 150mbs to the modem. Any ideas?
If a factory reset doesn't work, may be time for a new modem. Could be a bent pin inside the modem's ethernet port.
Curious how OP measured 95 Mbps...off the modem or the router.