Intel Ethernet X520 10GbE Dual Port KX4 Mezz User Manual

The Intel® Ethernet 10G 2P X540-t Adapters have the following indicator lights:
Label Indication Meaning
LNK (green/yellow) Green on Operating at maximum port speed.
Yellow on Operating at lower port speed.
Off No link.
ACT (green) Green flashing Data activity.
Off No activity.

Intel Ethernet X520 10GbE Dual Port KX4 Mezz Specifications

General

Interface	KX4
Data Rate	10 Gbps
Form Factor	Mezzanine
Data Transfer Rate	10 Gbps
Product Type	Network Adapter
Controller	Intel 82599
PCIe Version	2.0
Virtualization	Yes
Operating Temperature	0°C to 55°C
Jumbo Frames	Supported
Ports	Dual Port