You will be impressed with the quality of this toilet. I lowered the rating due to poor instructions as they are simple pictures and this review may help answer installation questions. I used 4 connections on the back: wired for 120 volt GFCI protected outlet, water supply on the left lower back using 3/8" toilet shut off valve to the supplied hose, upper left pipe is the waste out line 1" pvc pipe that clamps to a rubber fitting and all 90 degree connections are 2 45 degree fittings together, this waste line can be 1" or 3/4" pipe size as the instructions are for outside dimensions not inside dimensions as the USA uses, the right side has a sink drain line that clamps to a rubber fitting to the coupler outside size and does not need a vented line or P trap. The high cost is easily offset by being able to install this toilet where a conventional soil pipe is not realistic.
We initially had a Saniflo toilet that lasted 15+ years. The replacement toilet was easy to replace and is working fine.
I have attempted to upload the photo of the toilet numerous times and it will not upload.