it's works good with my X-H1 and X-T10 and my power bank, the cable could be a bit longer
Tested with Fujifilm X-H1 and X-T100 cameras using 2.4A powerbank. Works as supposed. Note that since these USB-adapter and a coupler use DC4017 plug, you can not connect native Fuji couplers (like CP-W126) to this USB-adapter or plug Fuji network adapters (like AC-9V) into this coupler. Fuji just uses another type of a plug (not sure, may be DC5525?). So it just would be nice to have the same plug as Fuji uses in this set up as well.