What do the LEDs on the TP-DCDC-1256GD-VHP indicate?
The TP-DCDC-1256GD-VHP has two separate 802.3at detects the output. One
on pins 1,2,3,6 and the other on pins 4,5,7,8. Each detector has an LED
associated with it. If the LED is green, it means that the unit had a
successful 802.3at detect on the pins and those pins are powered up.
Normal operation would be two green LEDs.