Using the Bambu Lab AMS lite Feeder Unit is easy. First, make sure you've selected the correct left or right unit for your slot. The left unit goes in Slot 1 and 2, and the right one in Slot 3 and 4. When you insert the filament, the unit will automatically pull it and send it to the toolhead. For installation, head over to the Bambu Lab Wiki to learn more. A very important thing to note is that you can't install the left unit in the right position or vice - versa, so always double - check your choice before purchasing. As for maintenance, keep the motors and gears clean to ensure smooth filament feeding. And since it's compatible with the Bambu Lab AMS lite, you don't have to worry about any compatibility issues.