I am attempting to install my first 10G equipment and having some issues. I installed a X520-DA2 in a Dell PowerEdge running Windows 2008 R2 SP1. I used a Netgear AXC763 direct attach 3M SFP+ cable to a Netgear GS752TXS switch. The card appears to be working fine in Windows and is showing solid link but no traffic is passing on it? The switch is also hooked to another identical one via LRM fiber and is working fine. I upgraded drivers to 16.8.1 CD release. I am simply trying to get a DHCP response and can't make any progress. Any sugggestions?