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Forum Discussion
benthalus
Sep 07, 2025Aspirant
RBR750 WAN port pins "pair D" not functional
I am running an RBR750 with single RBS750 on firmware v7.2.7.15_5.1.16 and just upgraded to USInternet 1 Gigabit fiber. After the installation I connected the Orbi to the fiber modem via Cat6 patch c...
CrimpOn
Sep 07, 2025Guru - Experienced User
For T-568B, the "D" pair is the brown wire and brown/white wire. (pins 7 & 8 on the RJ45 jack).
With two Ethernet cables showing the same behavior, the RBR750 appears to be busted. The warranty was one year and it appears to have lasted three years.