XB7 Modem 2.5GB red port not working as it should
Recently got pushed up to 1200 speed. Obtained XB7 mode, connected several 2.5 adapters to the red 2.5 port using good GAT6 cables. Get links on the cables at 2.5 but speed various speed test only at 100 on the adapters that do work, some adapters don't even link up properly. When I plug a 1gb adapter into this port at a 1gb link I get 1bg download. But with 2.5gb lan link it either doesn't work at all or works at a super low speed of only 100. Anyone else have this problem? Is there a specific adapter that works with this port? Or is there a hidden setting that Comcast needs to enable? I did go over all settings on the NIC, Comcast modem and did check the NIC drivers. I am getting a 2.5 link on the drop, so it's not a cable issue. Other devices work full speed at 2.5 on same wires.