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OWC Express 1M2 80G USB4 80Gb/s Portable NVMe M.2 SSD Enclosure (fanless)
Fanless 80 Gb/s NVMe enclosure that two named testers measured above 6,300 MB/s read and 5,500 MB/s write on Thunderbolt 5 Macs, with minimal throttling after an hour of sustained load.
Sold on Amazon.com, no code needed
Price: $199.99 on Amazon (checked 2026-11-12); Amazon's price can change, and the Amazon page has the current one. Specs below were verified on OWC's site 2026-11-08.
Discount code: none; Dealectric has no OWC code, and any Amazon coupon shows on the Amazon page itself.
Buy: https://www.amazon.com/dp/B0FKPGF3BH?tag=dealectric-20 — opens the OWC Express 1M2 80G USB4 80Gb/s Portable NVMe M.2 SSD Enclosure (fanless) listing on Amazon.com at no extra cost.
Warranty: 2-year OWC Limited Warranty for the enclosure alone. Returns: Per Amazon's return policy for the listing. Affiliate program: Amazon Associates; tracking cookie: 24 hours. As an Amazon Associate, Dealectric earns from qualifying purchases. All OWC codes, including the ones the store rejected: OWC discount codes.
Machine-readable record: /offers.json, id = "owc-express-1m2-80g".
Specifications
| Interface | USB4 80 Gb/s, Thunderbolt 5 compatible; works on Thunderbolt 4, USB4 40 Gb/s and Thunderbolt 3 (Mac) hosts |
|---|---|
| Maker speed by host | Over 6,000 MB/s on Thunderbolt 5 or USB4 80 Gb/s; up to 3,800 MB/s on Thunderbolt 4; up to 2,800 MB/s on Thunderbolt 3 |
| Measured | 6,319 MB/s read, 5,776 MB/s write on a Mac Studio M4 Max over a one-hour Blackmagic run (Macwelt); 6,856 / 5,550 MB/s on a MacBook Pro M5 Pro (Phototrend) |
| Cooling | Fanless aluminium heatsink, bus powered |
| SSD support | 2280 or 2242 NVMe M.2, single or double sided, up to 8 TB; PCIe 5.0 drives only if they average 11 W or less |
| Included cable | About 20 cm (Phototrend) |
Model: Express 1M2 80G. Figures are from the manufacturer's official product page unless a caveat says otherwise.
Compared side by side
The OWC Express 1M2 80G USB4 80Gb/s Portable NVMe M.2 SSD Enclosure (fanless) appears in this table next to models from other brands:
Who it's for
MacBook Pro M4 Pro or M4 Max owners who want a silent enclosure for a PCIe 4.0 drive such as the Samsung 990 Pro.
Caveats
- On a base M4 MacBook Pro the Thunderbolt 4 port caps it near 3,800 MB/s.
- The included cable is short, about 20 cm.
- PCIe 5.0 SSDs must average 11 W or less; OWC names the Samsung 9100 Pro as a passing example.
- No USB 3.x fallback is claimed; PCs need a Thunderbolt 4, Thunderbolt 5 or USB4 port.
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