I have one Access Point that is in a slightly unusual area with no on-switch-poe available. I know the injector delivers enough power and transfers data correctly as the device works fine connected directly to a laptop, but when connected to a non-poe switch it fails to communicate.
MR33 connected to Laptop via PoE Injector - Works fine.
MR33 connected to Unbranded Router via PoE Injector - Works fine.
MR33 connected to HP J9729A 2920 with POE+ switch. - Works fine.
MR33 connected to non-PoE HP J9728A/J9726A 2920-48G switch via PoE Injector - No ethernet comms (switches to repeater mode if close enough to other network, desired location is not).