Thanks a lot for this thread and the pics!The front lower USB on the floor can be switched between being powered only in ACC/Run mode (factory position), to direct-always-on from the battery.
Fuse panel is underneath the hood on the drivers side, by the windshield.
Fuse F95 has 2 positions A & B. F95A is the factory default ACC/Run power option. By moving the 10A fuse to the F95B position, you can have always on battery power. Very simple, do not need to bring to dealer to perform this upgrade.
Attached are photos from my 2017 Pacifica