Learn how to upgrade or replace the memory in your 2018 Mac mini with this RAM replacement guide. The mini can support up to 64 GB of RAM, using any combination of 8 GB, 16 GB, or 32 GB DDR4-2666 SODIMM RAM modules.
The antenna cable connector and socket are fragile.
Use the point of a spudger or fine tweezers to gently pry the antenna cable connector straight up off its socket on the logic board.
To reconnect the cable, use tweezers to position it carefully over its socket on the logic board, and then press it straight down until it snaps into place.
If you need more slack in the cable, you can temporarily pry it from the clips securing it to the antenna plate.
Grasp the fan cable by all six wires and gently lift to unplug it from the logic board.
If the cable won't disconnect, don't force it, or you may pull the socket off the board. Try holding the socket down with your thumb, then pinch the cable close to the socket with your index finger and gently lift.
In this step, you'll push the logic board free from the clips holding it to the frame. Push only where directed or you may damage the fragile cooling fins.
Place a thumb at each end of the exhaust vent, over the fan screw holes.
Push firmly in the direction of the ports until the logic board unclips and begins to slide out of the Mac mini.
Make sure the module is oriented correctly and the notch on the bottom is aligned, and then slide it in at about the same angle as you took it out. Press evenly until the gold contacts are no longer visible.
Finally, press the top edge of each RAM module to swing it down toward the logic board until the retaining clips on each side snap into place.
If the rubber guards interfere with the clips, spread the rubber guards away from the RAM with one hand and use the other to angle the RAM modules into place. Then, release the guards.
Check the clips and make sure both modules are fully seated and secure.