Apple’s latest Mac mini models—those equipped with the custom M6 and M5 Pro chips—no longer let users swap out or upgrade the internal SSD. Sources confirm that the NAND storage in these systems is soldered directly onto the logic board, a departure from previous Macs using the M4 and M4 Pro, which allowed aftermarket SSD modules. This shift eliminates the option of buying the base 256 GB model and later boosting storage independently.
What’s Changed in SSD Design
Historically, most Macs—including those with M1 and M2 chips—have had their NAND storage soldered down. The M4 and M4 Pro versions of the Mac mini broke that pattern by offering removable SSD modules. The new models have reverted to the sealed design, with no sign that aftermarket storage solutions will work going forward. A company that previously designed compatible plug-and-play SSDs says supporting the M6 and M5 Pro models now looks “unlikely.”
Another change: Mac mini units with 256 GB of storage now use a single NAND chip instead of two 128 GB chips. This setup halves their read/write speeds relative to higher-capacity versions. Benchmarks using Blackmagic Disk Speed Test show speeds in the 250 GB model of about 3,200-3,000 MB/s, compared with over 6,300-6,500 MB/s for 512 GB and up—though even then, the 256 GB version is still faster than many older base models.
Who’s Affected and What to Consider
Users who prioritized flexibility—being able to start with a lower-capacity model and add storage later—will need to rethink. The removable SSD path is now closed for the newest Mac mini. That means picking the right amount of SSD from the start carries greater weight.
Meanwhile, performance hunters should avoid the 256 GB version if they want top SSD speeds; a 512 GB model or larger delivers much faster data throughput due to having multiple NAND chips. For day-to-day tasks, the slower speeds might not be noticeable, but for pro workloads—editing large files, handling virtual machines, etc.—the difference can be significant.
Apple has not issued a public response to this change, which represents a major shift in Mac mini design philosophy. While soldered storage is more robust and compact, it limits repairability and customization—trade-offs many users care deeply about.
What this means going forward: This move reaffirms a broader trend of increasingly integrated hardware in Apple’s computers. It matters not just for individual consumers but also for how repair shops, enterprises, and power users plan their purchases. Going forward, always consider how much storage you’ll need now, not just what you might want down the line. Keep an eye on feedback from high-use communities; this could influence how Apple handles SSD configurations in future Mac releases.
