🔧 How to Upgrade the Internal SSD on the Mac Mini M4 — Yes, It’s Possible!
Apple quietly did something unusual with the latest Mac Mini M4: they made the internal SSD modular again. That’s right — unlike its M1, M2, and M3 siblings, the M4 Mac Mini doesn’t have a soldered SSD.
So if you’re a tech pro, tinkerer, or just someone who wants to stretch the longevity of their machine, this guide is for you.
🚨 First, the Reality Check
While the SSD isn’t soldered, Apple does not advertise this as a user-serviceable part, and:
-
It’s still not officially supported by Apple.
-
You’ll void your warranty if you open the device.
-
You must handle firmware and secure boot correctly.
This is not a beginner’s project — but if you’re in IT, you already know the risks.
🧰 What You Need
Before cracking open the Mac Mini M4, make sure you’ve got:
-
Torx drivers (T6, T5, possibly TR8 for some brackets)
-
Spudger and pry tools
-
Antistatic mat and wrist strap
-
Compatible Apple SSD modules (Apple uses proprietary connectors and firmware-locked chips — more on this below)
-
A second Mac with Apple Configurator 2 installed (important for system restore)
-
Patience and precision
🛠️ The Upgrade Process (High-Level Overview)
-
Backup Everything
Use Time Machine or Carbon Copy Cloner. You’re going to wipe the machine during the process. -
Disassemble the Mac Mini
Remove the bottom plate, fan, shielding, and internal components to access the SSD slots. (Yes, this is deep in the machine.) -
Swap SSD Modules
The Mac Mini M4 appears to use a dual-module SSD layout, similar to previous modular Mac Pros and Studio models. Replacements must be Apple SSD modules — standard M.2 NVMe drives won’t work. -
Reassemble Carefully
-
Restore macOS via DFU Mode
After installing the new SSD, the Mac Mini won’t boot. You’ll need to:-
Connect it to another Mac using a USB-C to USB-C cable.
-
Use Apple Configurator 2 to revive or restore the firmware and install macOS.
-
⚠️ Important Limitations
-
Modules must be paired and matched (Apple uses a RAID-like controller for dual-channel throughput).
-
Apple’s SSDs have firmware locks — random third-party replacements won’t work, even if they physically fit.
-
No TRIM or full performance unless Apple-certified modules are used.
✅ Who Should Actually Do This?
-
IT service providers managing many devices and trying to repurpose lower-storage models.
-
Refurb shops upgrading units for resale.
-
Tinkerers who enjoy living dangerously.
For most users, external SSDs via Thunderbolt 4 are still the safer, warranty-friendly choice.
💡 Bonus Tip: Buy Lower Storage, Upgrade Later?
We’re not recommending it, but yes, it’s technically possible to buy the base 256GB model and upgrade later. Just be ready to hunt for compatible modules — and remember, firmware matters.
🧩 Final Thoughts: Apple’s Quiet Pivot
Apple didn’t announce this change, and most users won’t notice — but for IT pros and geeks, the modular SSD in the Mac Mini M4 opens new possibilities. Whether you’re salvaging parts or planning long-term fleet upgrades, this is a welcome shift.
Need help upgrading, imaging, or restoring M4 Mac Minis at scale?
👉 IT Service Geeks can handle advanced hardware projects and system-wide Apple deployments. Get in touch today.