Top Page > Main Chapters > Installation > USB Device Server Option Type M12 > Installation Procedure > What Do the LED Indications Mean?
When this option is properly installed and recognized by the main machine, the LED indicators light up under the following conditions.

No. |
Light Color |
Lights Up When: |
1 |
Green and Yellow |
1000BASE-T operates |
2 |
Green |
10BASE-T operates |
3 |
Yellow |
100BASE-TX operates |