Best Mini PCs for Upgrades Under $300

These mini PCs qualify through at least five relevant upgradeability opinions with more praise than complaints. Inclusion does not mean that the processor, graphics, networking, memory, and storage are all replaceable on every configuration.

Check the service guide, barebones versus complete configuration, memory type and capacity, storage slots, cooling clearance, wireless module access, warranty terms, and parts compatibility before buying upgrades.

This view also limits results to models with a current listed price at or below $300. Prices can change after the page is generated, so confirm the live price before buying.