KVD21 80mm Fan + External Antennas/MIMO Cap

This is a lid for the T-Mobile home internet KVD21 which adds an 80mm fan, and slots for 4 router antennas or external MIMO antenna, I wasn't getting the best reliability with the factory setup because I live in a rural area, after seeing this post I thought I would give it my own attempt and was satisfied with the results.

See this post if you'd like to do this modification.

Used as base model, added 80mm fan mount and antenna slots.