Review on Leviton 1689 Multi-Position Switch - 50 Position, 3A at 250V, 6A at 125V by Wagner Witlin

Bought to replace a broken ceiling fan switch. The old switch had 5 wires, and the fan also had 3 speeds and an off position. (4 position switch) This switch was described as having 3 speeds and positions like the old one, but it only has 3 wires? There was no connection diagram, and an internet search yielded a very vague diagram from the manufacturer. Don't buy if you don't know what you are doing. I managed to install but now I only have 2 speeds and two unused wires.