Base on your inquiry, we have specific forum for these issues and I will be transferring this thread for faster response.
Intel® Customer Support
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You should find the Intel Ethernet Controller X550 AT2 Sageville Cadence Concept Schematic Symbol File document # 563987, Intel 82599 10 Gigabit Ethernet Controller [Niantic] Cadence Symbol document # 544938, and Intel 82599 10 Gigabit Ethernet Controller [Niantic] OrCAD Symbol document # 544937 that may help you. You can find them when you are logged into your Resource & Design Center (RDC) privileged account on the following websites:
The RDC Account Support form is the channel to process your account update request or report any inconveniences with the provided websites. It can be found at: