Review on DSLRKIT Active PoE Splitter: 48V to 5V/5.2V USB Type A Female with 2.4A 802.3af for Tablet by Jonathan Davenport

I am using this to power a Raspberry Pi 3 Model B from a Juniper EX2200-C Virtual Chassis. The Raspberry Pi powers on with no problem and the switch displays PoE Class 4 (30W). Unfortunately, there is no combination of autonegotiation, speed, flow control, duplex, etc. on the Raspberry Pi side, nor on the Juniper Switch side. Ethernet passthrough really works. The best I can get is to set both sides to 100/full/manual and the link on the raspberry pi goes up/up but the link on the juniper switch stays up/down (this is very weird) . All other combinations increase/decrease on both sides down to 10/half/manual.