Up to

3200MB/s

Real-World Performance

Universally

Compatible

USB4/Thunderbolt/USB-C

Easy

DIY Install

4 x NVMe M.2 SSDs

Advanced

Raid

RAID 0/1/4/5/1+0 (10)

DIY Enclosure

Includes SoftRAID Premium — RAID 0/1/4/5/1+0 (10) or JBOD

DIY Enclosure

No softRAID software

Click thru for price

Up to 32TB

The Best DIY Raid You Wanted

We heard you loud and clear (pun intended) when you said you loved everything about the Express 4M2 but wanted it quieter. After adding smart adaptive fans that only turn on when needed for near silent operation, we decided to give it USB4 connectivity for the optimum blend of compatibility, performance, and affordability. 

Maximum Speed from Your Machine

The Express 4M2 is the fastest multiple NVMe SSD enclosure we offer and was purposefully built so you can utilize the maximum performance capability of your Mac or PC with full compatibility:

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

Raid Ready

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

Complete

Includes USB-C 40Gb/s cable

Stable

Included stand ensures maximum desktop placement stability

Worry-Free

2 Year Limited Warranty

The Power of Choice is Yours

Engineered 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 8.0TB 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

High 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 utilizes a heat dissipating solid aluminum 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. 

Express 4M2 is ideal for:

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. OWC enclosures include 3 Years of SoftRAID Premium.

●  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
Our #1 Priority

Anyone can put a bunch of components in a housing and call it an enclosure or a drive. OWC is not just anyone. We’re a group of filmmakers, musicians, designers, content creators, and parents just like you wanting to capture and preserve that irreplaceable moment. Our data storage products go through countless hours of ongoing development testing and certification processes. We then subject them to extreme real-world abuses. The priority for some storage devices is to be a mass-produced, lowest price commodity. We do it differently because the reliability of your data and the longevity of an OWC product is priority #1.

OWC USB-C (40Gb/s) Cable Included

OWC Express 4M2 comes with a 0.7M (28") OWC USB-C (40Gb/s) Cable. But if your workflow demands a different length to make the connection, OWC USB4 Active Optical Cables are the perfect choice.

Trusted by Pros & Enthusiasts the World Over

We build our hardware to the highest standards of reliability and performance. Because 100% reliability is always the goal, we rigorously quality test and back our hardware with a 2 Year Warranty and award-winning customer support.