Intel XL710-Q2 User Manual page 129

Dual Port Copper Adapters
The Intel® Ethernet Converged Network Adapter X550-T2 has the following indicator lights:
Label Indication
Green
Link Yellow
Off
Blinking On/Off
Activity
Off
Meaning
Linked at 10 Gb.
Linked at 1 Gb.
Linked at 100 Mbps.
Actively transmitting or receiving data.
No link.