I recently provisioned aTP Link SG3424P switch. I have a UAP-AC-LR access point that I want to power from the switch.
I have confirmed that the UAP-AC-LR is 802.3af Mode A compliant in accordance with this link:
The UAP-AC-LR I have, when powered by a 24V passive power injector, is adopted by my Unifi controller and the controller says it is a Rev. 16 board. The date code on the UAP-AC-LR is 1640. Again, this is in accordance with the above link.
The TP Link SG3424P switch is also 802.3af compliant, per the data sheet:
I enabled POE on a port but no joy when I plug the UAP-AC-LR into that port.
Further research shows that the TP Link switch is Mode A only for 802.3af and that the polarity may be reversed from normal:
I tried building two different crossover cables in accordance with the following link, a full T568B crossover, and the partial one shown at the bottom of the page. Used an automated cable tester to confirm proper construction. Neither worked.
I suppose that the switch could be broken. I have a POE tester coming, but do not have it yet, and have no other way to test the switch.
Any suggestions to get this specific combination working would be MOST appreciated.