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Cable modem won't connect to Mac with J45
I have a brand new C6300V2 cable modem/router that is connected to my Spectrum service and the wireless part (after some issues) works fine with my desktop Mac and with other devices. But, when I plug the cable from the yellow J45 output jack to the Mac's input, The Mac will not recognize the modern and the wired light flashes constantly. ??? Any ideas anyone?
The end of this story is apparently my Mac was damaged by the lightning strike and the Ethernet (J45 connector on the back) will no longer make a wired connection to the modem/router. I blamed the modem/router at first because I couldn’t get my TV connected to wired Ethernet either, but that was a wiring error on my part. The modem/router device works fine. The lightning took out my old modem/router, either my TV or amplifier ARC function, and my Mac desktop Ethernet port. That much so far.
Case closed.
12 Replies
ps Setup on Mac side it TCP/IP, IPv4 Address: 169.254.9.111, Configure IPv4: using DHCP
all other wired devices work fine?
Just the one mac?
Does that mac work over wireless?
One Mac but my LG TV won’t connect, either, via a wired connection. I thought this connection via a wired J45 connection was automatic. What settings need to be made beyond what I listed? Again, all wireless connections are up and running on multiple devices.
