Push and remove one of the 1/2" knockouts on the side plate
Install standard L16 cable connector
Use double connector for daisy chaining multiple drivers
Insert line voltage feed into the cable connector and splice same colour wires using wire nuts
Close the cover. Connect the driver to the light fixture — the arrows on the male and female parts of the connector — between the driver and the fixture should match
TIghten the connector by hand. DO NOT attach the junction box to anything.
This procedure is necessary so you can pull it through the ceiling opening in case you need to service the driver in the future