Maximum Performance That's Ready to Run.

Express 4M2 Ultra gives creative teams and studios everything they need in a high-performance desktop storage array: massive all-flash NVMe capacity, dependable SoftRAID-managed redundancy, and the dramatically improved workflow efficiency of Thunderbolt 5 bandwidth. It arrives pre-configured and tested, so you can connect it and start working the moment it's unboxed. Available in 4TB, 8TB, 16TB, and 32TB capacities, Express 4M2 Ultra gives video, VFX, and photo teams the speed, capacity, and reliability to keep projects moving from capture to final delivery.

However You Want to Run It

Choose a preconfigured Express 4M2 Ultra to start working immediately, or add your own NVMe M.2 SSDs to the bare enclosure and build it your way. Configure Express 4M2 Ultra with OWC SoftRAID or your own RAID software to achieve your optimum level of performance and data redundancy. Add additional Express 4M2 Ultra units or other Thunderbolt storage devices to the second Thunderbolt 5 port and flex bigger capacity muscle. However you choose to run it, Express 4M2 Ultra is ready.

Maximum Performance
Up to 6622MB/s¹ real-world speed for 12K RAW video, 8K multi-cam sequences, batch processing of high-res images, and large data sets.

Connect All Your Devices
Daisy chain up to five additional Thunderbolt devices plus one USB peripheral via the second Thunderbolt 5 port.

Ready to Run
Arrives pre-configured with NVMe SSDs installed and RAID-configured via SoftRAID, so you can connect it and start working right away.

Work Fast with Full Focus
A smart adaptive fan quietly activates inside the solid aircraft-grade aluminum body only when needed, keeping your drives running at full speed without the noise that breaks creative focus or thermal throttling that kills productivity.

Reliable by Design
SoftRAID Premium included for advanced RAID monitoring, predictive health alerts, and peace of mind for your data.

Highly Compatible
Use with Thunderbolt 5, 4, and USB4 Macs and PCs as well as Thunderbolt 3 Macs.

Scale As You Grow
Start with up to 32TB in a single array and expand up to 128TB as one volume through daisy chaining additional Express 4M2 Ultra units.

Complete
Includes Thunderbolt 5 80Gb/s cable and 3 Years of SoftRAID Premium.

Maximum Speed with Thunderbolt 5

Express 4M2 Ultra was purposefully built to harness Thunderbolt 5's incredible 80Gb/s bandwidth. Experience up to 6622MB/s performance with your Mac or PC. Connect to Thunderbolt 4 or USB4 systems and still get speeds up to 3200MB/s. Even Thunderbolt 3 Macs tap into blazing performance.

Over 2x Faster Multi-Camera Ingest

In the fast-paced, tight-budget world of filmmaking where time is money, every minute saved is critical. When you're juggling multiple cameras or offloading a variety of media cards simultaneously, you’ll keep your production running ahead of schedule by ingesting over twice as fast with Express 4M2 Ultra vs 40Gb/s storage.

Full Speed with Full Focus

High-performance NVMe drives in RAID configurations generate serious heat. Whether you're rendering 8K footage, ingesting multiple media cards, or running intensive database operations, you get maximum performance without the noise that breaks creative focus or the thermal throttling that kills productivity. Express 4M2 Ultra's solid aircraft-grade aluminum body provides passive cooling and rugged protection, while a smart adaptive fan quietly activates only during sustained workloads.

Express 4M2 Ultra is ideal for:

• Production companies and creative studios wanting turnkey Thunderbolt 5 NVMe RAID storage that arrives pre-configured and tested, ready to deploy across editing bays without dedicating time to building drives.
• Video editors, VFX artists, colorists, and high-volume photographers who need dependable, ready-to-run NVMe RAID performance for 12K RAW video, VFX compositing, 8K multicam sequences, and batch editing of ultra-high-resolution images.
• DITs and on-set teams needing a fast, reliable array to offload and back up media cards without configuring drives themselves, with daisy-chain support for connecting additional arrays or devices in the field.

• IT managers and procurement teams wanting who want consistent, pre-qualified storage configurations that are easy to deploy at scale across multiple workstations.
• Customers who'd rather build it themselves can start with the bare enclosure, with or without SoftRAID, and install their own choice of NVMe M.2 SSDs.

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.

Select OWC solutions and enclosures include 3 Years of SoftRAID Premium! See Includes section for details.

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.

Discover the OWC Difference

Since 1988, our mission has focused on maximizing the usefulness and longevity of your technology investment. Our business operations share that same sustainability commitment. As the first 100% on-site wind powered technology manufacturer/distributor in the U.S., we now generate excess power. 97% of solid waste is recycled. These and other actions have resulted in our headquarters being Energy Star® and LEED® Platinum certified.

1. Up to 6622MB/s achieved with PCIe 4.0 and later SSDs. PCIe 3.0 SSDs are limited up to 3800MB/s.