2018 Mac Mini RAM expanded from 8GB to 16GB mico-DIMM DDR-4 2666MHz-second one DIY

Because Amazon was offering a promotion for international free shipping, I bought a second 2018 Mac mini of refurbished product with excellent apprence . It still has an Intel i5 CPU and 8GB of RAM, but the SSD is 512GB. It cost about $200 USD (which is about 6,000 NTD) and arrived in Taiwan from the US within a week.

因為AMAZON 購物網探提供國際免運費的促銷活動，我買了第二台的2018年MAC MINI 整修機，除了邊緣有小缺損，其他外觀近乎全新狀態。CPU規格仍是 intel i5，記憶體是8GB，但是SSD是512GB，大概是200美元（相當於台幣6千元），一個星期就從美國送達台灣。

Remove the case by T type screw driver, you can see the iFix it website: https://zh.ifixit.com/Guide/2018%E6%AC%BEMac+Mini%E6%8B%86%E8%A7%A3/115210

Use the Same brand Crucial New DDR-4 16GB module 3200MHz by Micron, anther manufactor is the SK Hyrix DDR4, not Micron DRAM module. Ony support the maxium speed of 2666MHz. One made in 2010, another made in 2015, five years lags! 

After expansion , the total RAM: 4GB+16GB=20GB 

It works well as the first times !