Reinstall Data Port and Cover

What happens here

Take a low-voltage mounting bracket (often referred to as a 'data box' or 'data plate') and insert it into the lower, existing data port opening. Feed the existing Cat5 Ethernet wires through this bracket. Secure the bracket by tightening its screws, which will also extend wings to hold it in place. Then, carefully tuck the Ethernet wires into the box and attach the original blank cover plate, screwing it securely. If any drywall was damaged during the old work box removal, use a larger 'jumbo plate' to cover it if necessary.

Goal: Secure the existing data wiring and cover the opening with a blank plate.