Matrox Extio 3 Series User Manual page 43

Extio N3408 or N3208 unit (LAN2)
LED color
No LED (black)
Green (solid)
Green (fast blink)
Amber (solid)
Red (solid)
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 76.
Matrox Extio 3 Series – User Guide 43