Please, please, please do PoE

[tkaiser]

I would better think about providing 'el cheapo' PoE (neither compliant to IEEE 802.af nor IEEE 802.3at) to every Pine64 that features 100 Mbits/sec Ethernet only. There you have 2 cable pairs that can be used to provide 5V/GND on 4 unused cables. All you then need is something like this

http://www.i4wifi.eu/EU-230V-powering-1/...panel.html
http://www.i4wifi.eu/EU-230V-powering-1/...panel.html

And then everyone can save the $2 for a passive PoE splitter: http://www.i4wifi.eu/EU-230V-powering-1/...itter.html

Simply route 2 traces from Ethernet jack to AXP803 and you're already done.