OWC
OWC Express 4M2 USB4 40Gb/s Four Slot NVMe M.2 SSD Enclosure
Bottom line: The OWC Express 4M2 USB4 40Gb/s Four Slot NVMe M.2 SSD Enclosure is a specs-and-price decision rather than a crowd-consensus one in the drives & media category. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.
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Pros & Cons
Pros
- ✓ Highly Capable: Up to 3200MB/s real-world performance
- ✓ Backed by OWC's warranty and support channels
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated
SpecPicks Verdict
SpecPicks scored OWC Express 4M2 USB4 40Gb/s Four Slot NVMe M.2 SSD Enclosure using a rating × review-volume × price-fit model applied to published specs and reviews across the drives & media category. OWC's drives & media lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for drives & media of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Key Features
- Highly Capable: Up to 3200MB/s real-world performance
- Highly Compatible: Use with USB4, Thunderbolt, and USB-C Macs and PCs
- Highly Reliable: Aircraft grade aluminum offers rugged protection of installed SSDs plus effective heat dissipation to keep everything cool for consistent top speed
- Near Silent Operation: Engineered with smart, adaptive fans that activate only when needed or under heavy load, making it ideal for uninterrupted creative focus
- DIY easy: Use your choice of NVMe M.2 2230, 2242, or 2280 SSDs
- Built for RAID: Certain models include OWC SoftRAID; the fastest and most flexible RAID 0/1/4/5/1+0 (10) tool. Also supports Apple Disk Utility RAID, Windows Disk Management RAID, and Windows Storage Spaces
Full Specifications
| Brand | OWC |
|---|---|
| Color | Multicolor |
| Complete | Includes USB-C 40Gb/s cable |
| DIY easy | Use your choice of NVMe M.2 2230, 2242, or 2280 SSDs |
| Model Name | OWCUS4EXP4M2 28783642 |
| Read Speed | 3200 megabytes_per_second |
| Unit Count | 1 Count |
| Worry-free | 2 Year OWC Limited Warranty |
| Form Factor | M2 |
| Media Speed | 3200 megabytes_per_second |
| Connectivity | USB-C |
| Model Number | OWCUS4EXP4M2 |
| Compatibility | PC, Mac |
| Built-In Media | 1.0M USB-C 40Gb/s Cable, External Power Supply, OWC Express 4M2 Enclosure |
| Highly Capable | Up to 3200MB/s real-world performance |
| Highly Reliable | Aircraft grade aluminum offers rugged protection of installed SSDs plus effective heat dissipation to keep everything cool for consistent top speed |
| Mfr Part Number | OWCUS4EXP4M2 |
| Number of Items | 1 |
| Special Feature | Smart Adaptive Cooling |
| Hardware Platform | Mac, Windows |
| Full listing title | OWC Express 4M2 USB4 40Gb/s Four Slot NVMe M.2 SSD Enclosure | Four NVMe M.2 2230/2242/2280 slots - Up to 3200MB/s - Connects to Thunderbolt 5/4/3 and USB-C 10Gb/s - Mac/PC |
Ready to buy?
OWC Express 4M2 USB4 40Gb/s Four Slot NVMe M.2 SSD Enclosure | Four NVMe M.2 2230/2242/2280 slots - Up to 3200MB/s - Connects to Thunderbolt 5/4/3 and USB-C 10Gb/s - Mac/PC is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
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