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In How to position your Mac mini Apple (perhaps being overcautious) say not to: Don't put anything on top of your Mac mini or stack Mac minis on top of each other either. If your Mac mini is configured with AirPort or Bluetooth, you could hamper the signal strength since the antennas are located in the top of the computer. It will not harm to try as they ...


I wish I had a picture for absolute proof, but at one point we stacked up 5 Mac minis for several years running two FirstClass email servers, an OD server, and two file servers. They were in a well air-conditioned systems room with superlative ventilation. To improve the air-flow between the Mac minis, I did stick 1/2" rubber feet at each corner of the ...


I use an IKEA 7-inch trivet underneath my Mac mini to improve ventilation. That might help between stacked Mac minis. https://www.ikea.com/gb/en/p/laemplig-pot-stand-stainless-steel-00186041/

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