This one is the same with USB 3 and gigabit Ethernet for the same price! time to return yours and buy this one :)
https://www.amazon.com/Cable-Matters-Multiport-Adapter-Ethernet/dp/B01M0K0DL2 PD 80W. You absolutely can not do 100W from a 100W input, the hub and cabling has losses. Edit: I am stupid.