Yes, you can upgrade a mini PC. These are the parts to look at

Mini PCs are becoming popular space-efficient desktop PCs. I know this because I just bought one of the smallest mini PCs, ...
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TerraMaster F4 SSD NAS Review: More useful than I imaged

Docker has become a must-have for many, especially in the homelab world. The TerraMaster F4 SSD NAS has full Docker support ...