I have a LeMaker HiKey and I'm having trouble getting the network running in a preferred configuration. The HiKey is an inexpensive ARM64 development board running Linaro. Linaro is a lot like Debian with an LXDE desktop, and in effect, this is a mini-desktop with an ARM CPU architecture.
The board is powered and has two USB ports and a micro USB port. However, the board lacks an ethernet port. The USB ports do not power attached devices, so I need to use a powered hub when using them.
If I use an Ethernet-to-USB adapter with a powered hub, then the device has network connectivity. If I remove the powered hub and provide Power over Ethernet (PoE+) to the Ethernet-to-USB adapter, then the device loses its network connectivity.
I tried 3 different Ethernet-to-USB adapters with the same results, so I am missing something. I think this is a case of me not knowing what I don't know. Can anyone explain to me what I am missing in the configuration using Power over Ethernet?
(I am trying to avoid a PoE injector in the adapter. That is, I don't want to have to plug the Ethernet-to-USB adapter into a wall socket. Its the reason I purchased a Power over Ethernet switch).