Intel® Ethernet Adapters and Devices User Guide
Hardware Compatibility
Before installing the adapter, check your system for the following:
The latest BIOS for your system
One open PCI Express slot (see the specifications of your card for slot compatibility)
For devices that support bifurcation, make sure PCI slot bifurcation is enabled in your system’s BIOS.
The Intel® 10 Gigabit AT Server Adapter will only fit into x8 or larger PCI Express slots. Some systems have physical x8 PCI Express slots that actually support lower speeds. Please check your system manual to identify the slot.