Matrox Extio 3 Series User Manual page 46

Extio N3408 or N3208 unit (LAN2)
LED color
No LED (black)
Green (solid)
Green (fast blink)
Amber (solid)
Red (solid)
46 Matrox Extio 3 Series – User Guide
LAN2
No power.
Network activity detected.
Data transfer in progress.
No transceiver detected.
Error establishing communication. Verify all network connections,
then reboot your Extio 3 devices. For more information on rebooting
your Extio 3 device, see "Rebooting or resetting your Extio 3 device",
page 82.