OWC Express 4M2
OWC Express 4M2, 4 x NVMe M.2 SSD Slots, 40 Gb/s USB4 Interface
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OWC Express 4M2
Durable Aluminium Storage That Won't FailThe OWC Express 4M2 is a powerful DIY external storage enclosure built for creators, professionals, and anyone who needs fast, flexible storage in a compact design. Supporting up to four NVMe M.2 SSDs, it delivers high-speed external storage for demanding workflows such as video editing, large file transfers, photography, and content creation, while offering USB4, Thunderbolt, and USB-C compatibility for use across Mac and PC. Its RAID-ready architecture gives users the freedom to configure their storage for maximum speed, redundancy, capacity, or a balance of all three. With its blend of performance, versatility, and professional-grade design, the OWC Express 4M2 stands out as a reliable, future-ready external storage option for those who want more than standard plug-and-play storage offers.
The Best DIY RAID You Wanted
Smart DesignAfter adding smart adaptive fans that only turn on when needed for near-silent operation, OWC decided to include USB4 connectivity, offering the perfect blend of compatibility, performance, and affordability. Now you can build a desktop/shuttle high-performance RAID with your choice of NVMe M.2 SSDs and get up to 3200MB/s performance with USB4, Thunderbolt, and USB-C Macs and PCs.
Maximum Speed from Your Machine
The Express 4M2 is the fastest multiple NVMe SSD enclosure we offer and was purposefully built so you can utilise the maximum performance capability of your Mac or PC with full compatibility:
| Express 4M2 Connected To... | Runs As | Up to Real-World Speed | Mac computers with Apple Silicon M1/M2/M3/M4 |
USB4 (40Gb/s) | 3200MB/s |
|---|---|---|
| USB4 (40Gb/s) port on any PC | USB4 (40Gb/s) | 3200MB/s |
| Thunderbolt 5 port on any Mac or PC | USB4 (40Gb/s) | 3200MB/s |
| Thunderbolt 4 port on any Mac or PC | USB4 (40Gb/s) | 3200MB/s |
| Thunderbolt 3 port on Intel Mac | Thunderbolt (40Gb/s) | 3000MB/s |
| Thunderbolt 3 port on PC | USB 3.2 (10Gb/s) | 990MB/s |
| USB 3.2 (10Gb/s) port on PC | USB 3.2 (10Gb/s) | 990MB/s |
Highly CapableUp to 3200MB/s real-world performance.
DIY EasyUse your choice of NVMe M.2 2230, 2242, or 2280 SSDs.
Highly CompatibleUse with USB4, Thunderbolt, and USB-C Macs and PCs.
Highly ReliableAircraft grade aluminum offers rugged protection of installed SSDs plus effective heat dissipation to keep everything cool for consistent top speed.
Near Silent OperationEngineered with smart, adaptive fans that activate only when needed or under heavy load, making it ideal for uninterrupted creative focus.
RAID ReadyCertain 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.
CompleteIncludes USB-C 40Gb/s cable.
StableIncluded stand ensures maximum desktop placement stability.
Worry-Free2 Year OWC Limited Warranty.
The Power of Choice is Yours
Compact PowerhouseEngineered to support any NVMe M.2 2230, 2242, or 2280 SSD, this compact powerhouse gives you the ultimate flexibility to choose the drive you want today, including OWC Aura SSDs with up to a massive 8TB capacity each. When tomorrow’s 16TB and larger drives hit the scene, you can easily boost your Express 4M2’s capacity.
One Cool RAID for Diverse Workflows
Compact PowerhouseHigh-speed backups, multiple media card offloads, and intense RAW photo and 8K video editing sessions mean one thing… Heat. You can put aside any thermal throttling and noise concerns because the Express 4M2 utilises a heat-dissipating solid aluminium body along with smart, adaptive fans that activate only when needed or under heavy load. Diversity of use also means being able to easily work cross-platform with Macs and PCs. We help you keep your cool in mixed environments with our MacDrive software (available separately).
Express 1M2 is Ideal for:
DITs and Filmmakers wanting to build an affordable yet high-performance NVMe SSD RAID with up to 32TB of capacity, RAID 5 capabilities, and the ability to deliver maximum offload speeds and thermal stability when backing up media cards from multiple cameras on set.
Professional Video Editors, VFX Artists, Colourists, and High-Volume Photographers seeking an easy DIY assemble high-performance NVMe SSD RAID to handle demanding post-production and editing workflows including 8K RAW video, VFX compositing work, multicam sequences in 4K RAW or ProRes video, and batch editing ultra-high-resolution pictures.
Anyone looking for a lower cost RAID option to the award-winning four NVMe M.2 based OWC ThunderBlade and are willing to accept the Express 4M2’s larger form factor, fan cooling, no additional connectivity ports, and no ballistic shipping case for shuttle use.
The Most Powerful RAID Tool on the Planet
SoftRAID is the world’s fastest and most flexible application to configure, maintain, and protect your RAID volumes on Mac and PC.
• High-Performance RAID 0/1/4/5/1+0 (10) volumes
• Predictive Health Monitoring proactively notifies of Volume and Disk issues well before failure — provided on your computer and remotely
• Seamless Cross-Platform Sharing with support for Apple-formatted APFS and HFS+ SoftRAID volumes between Mac and Windows at no additional cost
• 35+ Years of Experience of Pro Support to provide peace-of-mind with setup help, ongoing questions, or urgent disk issues
• And many more unique features.
Your Data’s Reliability is the #1 Priority
Designed for YouAnyone can put a bunch of components in a housing and call it an enclosure or a drive. OWC is not just anyone. They are a group of filmmakers, musicians, designers, content creators, and parents just like you, wanting to capture and preserve that irreplaceable moment. Their data storage products go through countless hours of ongoing development, testing and certification processes. They then subject them to extreme real-world abuses. The priority for some storage devices is to be a mass-produced, lowest price commodity. They do it differently because the reliability of your data and the longevity of an OWC product is priority #1.
Discover the OWC Difference
Energy Star and LEED Platinum CertifiedSince 1988, OWC’s mission has focused on maximising the usefulness and longevity of your technology investment. Their business operations share that same sustainability commitment. As the first 100% on-site wind-powered technology manufacturer/distributor in the U.S., they now generate excess power. 97% of solid waste is recycled. These and other actions have resulted in their headquarters being Energy Star and LEED Platinum certified.
PayPal Credit
| Monthly Payment: | £23.92 |
| Instalment Rate: | 16.9% p.a. (fixed) |
| Cost of purchase: | £263.99 |
| Total inc. interest: | £287.00 |
| Monthly Payment: | £12.89 |
| Instalment Rate: | 16.9% p.a. (fixed) |
| Cost of purchase: | £263.99 |
| Total inc. interest: | £309.34 |
| Example | |
| Minimum Spend: | £99 |
| Instalment Rate: | N/A |
| Cost of purchase: | £99 |
| Total inc. interest: | £99 |
Representative Example:
Purchase Rate: 23.9% p.a. (variable)
Representative: 23.9% APR (variable)
Assumed Credit Limit: £1,200
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