Check a Mac Studio serial.
Enter a Mac Studio serial and Macfax returns the exact model and year. Every Mac Studio (2022 and later) uses a randomized serial that encodes nothing — character decoders can't read them, so Macfax resolves them against the model database instead.
Find the serial on a Mac Studio.
- On the chassis: printed on the underside of the enclosure, inside the ring of the rubber foot.
- On any Mac that boots: Apple menu → About This Mac shows the serial.
- Off the machine: the original box carries it on the barcode label, and it appears on the Apple invoice.
- Buying one? Ask for a photo of About This Mac and one of the underside, and check the two serials match.
Every Apple Silicon Mac Studio.
Have a Model ID instead of a serial (from About This Mac or a listing)? This table maps it. The serial lookup above returns the same answer from the serial alone.
| Model ID | Chip | Year |
|---|---|---|
| Mac13,1 | M1 Max | 2022 |
| Mac13,2 | M1 Ultra | 2022 |
| Mac14,13 | M2 Max | 2023 |
| Mac14,14 | M2 Ultra | 2023 |
| Mac16,9 | M4 Max | 2025 |
| Mac15,14 | M3 Ultra | 2025 |
What sellers are asking.
Across 392 live asking prices, Mac Studio listings run $1,800 to $4,313, typically $2,950. All configurations pooled; the per-configuration pages below carry the tighter bands.
What goes wrong with used Mac Studio deals.
Case-swap fraud targets the Studio specifically: a Max board in an Ultra-labeled case. The Ultra weighs about two pounds more — weigh it, and check the serial resolves to the model on the label.
The 2025 line pairs an M4 Max with an M3 Ultra — the higher number is not automatically the faster machine for your workload. The serial says which one is actually in the box.
Buying or selling a Mac Studio?
A serial names the model. A Macfax report proves the Mac in front of you is really that machine, in the condition claimed, hardware-signed and verifiable online.