Product review (3 stars): How I connected it w/ shower tub & not rinse thoroughly
This is how I connect it with my shower tub with a connector bought from Home Depot. See picture for the connector specification.
Everything fits. Almost effortless to install, except the connection to shower tub. The only point deducted is no gentle cycle (I did not find it on the electrical panel).

=== update: it doesn't rinse well
Used large/super water level, 1 capsule of tides pod on top of clothes 3/5 load of it's capacity... it turned out that the tides pod capsule was not fully washed away. See picture. Need to wash again. Maybe remember to put the capsule under clothes next time.