Connect All Tubing to RO Unit

What happens here

Now that the RO unit is mounted and the drain saddle is installed, connect the various PEX tubing lines. Connect the 3/8-inch PEX tubing from the cold water T-adapter (inlet) to the inlet port on the RO unit (often marked 'IN' or indicated by a blue connection). Connect the 1/4-inch PEX tubing from the newly installed RO faucet to the purified water outlet port on the RO unit (often marked 'OUT' or indicated by a red connection). Finally, connect the 1/4-inch PEX tubing from the drain saddle to the wastewater outlet port on the RO unit (often marked 'DRAIN' or indicated by a white connection). Ensure all push-fit connections are fully inserted and secure. Trim tubing to appropriate lengths if necessary, ensuring no kinks.

Goal: Connect all the remaining PEX tubing lines (inlet, faucet, drain) to their respective ports on the mounted RO unit.