4 Replies Latest reply on Jul 27, 2017 11:41 PM by Intel Corporation

    X540-AT2 speed problem



      I a have Intel s2600wt motherboard this two X540-AT2 ehernet adapters. Link speed in auto negatiation is only 100mbps, then i set 1000mbps on switch or in ethernet adapter properties - link lost. My os is Windows Server 2012 R2 and my switch is Cisco 6509 running on ios  version 15.1(2)SY9. Also i tried  Cisco 2960G with ios Version 15.0(2)SE8 this same result.