OWC Express 4M2

OWC Express 4M2 Horizontal OWC Express 4M2 Horizontal OWC Express 4M2 Front OWC Express 4M2 Back OWC Express 4M2 Vertical OWC Express 4M2 Cutaway with OWC Aura Ultra III SSDs

OWC Express 4M2


Up to 2800MB/s

Blazing fast transfer speeds

Up to 32TB

Storage capacity

Quick Specs:

  • Thunderbolt (USB-C)
  • 4 NVMe M.2 Drive Slots
  • SoftRAID
  • DisplayPort 1.2
  • Mac & Windows

Infinitely configurable. Infinitely reconfigurable.

  • Four NVMe M.2 SSD slots
  • Compact design
  • Available with SoftRAID: robust software for creating, monitoring, and managing advanced RAID sets
  • Thunderbolt Certified for Mac and Windows
  • Thunderbolt cable included
  • 1 Year OWC Limited Warranty

  • Performance & reliability at an exceptional value

  • Wide array of model configurations

  • OWC storage solutions consistently receive top ratings

  • Industry-leading warranty & support. Get help »


DIY Enclosure

Includes SoftRAID — Supports RAID 0/1/4/5/1+0 (10) and JBOD

DIY Enclosure

Add your own RAID software (SoftRAID not included)

Pint-Sized Powerhouse

Small in stature. Big on capability. The OWC Express 4M2 is ready to serve with four easy-to-access NVMe M.2 SSD slots customizable for any workflow with vibration damping feet that allow for vertical or horizontal orientation. Install up to 32TB of capacity and experience up to 2800MB/s of mind-bending performance via Thunderbolt. The Express 4M2 is an amazingly small digital workhorse with world-renowned OWC quality and award-winning support built in.

Built Smaller and Faster from Input by Pros Like You.

The OWC Express 4M2 is designed with superior ease-of-use in mind. We worked with award-winning creatives and listened to the kudos they heaped onto the OWC ThunderBay mini, and we put all that shared knowledge to good use when we set out to build the next-gen Thunderbolt multi-bay drive. The result is the 57% smaller and 2.5x faster OWC Express 4M2.

It's smaller and easier to fit into your workflow, studio and on stage. It's faster with four easy-access M.2 slots so you can swap, upgrade or expand your Express 4M2 to configure and reconfigure it to serve any project need.

OWC Express 4M2 Vertical
OWC Express 4M2 Inside

Game-Changing NVMe SSD Performance

NVMe (Non-Volatile Memory Express) is a hyper-efficient communications interface protocol built from the ground up to properly take advantage of SSD technology and high-performance connection buses like PCIe. The result is exponentially faster and efficient SSD storage, and the OWC Express 4M2 has room for four NVMe 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.
  • Learn more about SoftRAID

M1 Macs require macOS 11.3 or later. SoftRAID is licensed per computer.

iMac Pro with SoftRAID
OWC Express 4M2 Multi-Drive Support with SoftRAID

Multi-Drive Flexibility

Configure and reconfigure your storage however you need by combining multiple OWC Express 4M2 drives together on Mac and Windows. With OWC SoftRAID (optional with Express 4M2) you get the amazing capability to RAID across multiple drive enclosures. On a Windows PC, add more Express 4M2 drives to your storage pool using Windows Storage Spaces.

OWC Express 4M2 Back

DisplayPort

Display connection flexibility is yours with a convenient DisplayPort located right on the rear of the OWC Express 4M2. There's no need to worry about adapters or extra long cables. Just plug your display directly into the Express 4M2 and you're all set.

Thunderbolt Logo

Thunderbolt Made Easy

We make it easy to choose the right gear. Our Thunderbolt Certified products offer the same performance and functionality whether they are Thunderbolt 3 or Thunderbolt 4. And if you’re rocking a beloved Thunderbolt 2 machine, we offer an adapter so you can plug into our universe of award-winning solutions. No hassles, no confusion. That’s the OWC Difference.

Apple Mac models with Thunderbolt 2/Thunderbolt ports can be connected using an Apple Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter and a Thunderbolt 2 cable (available separately). This configuration provides data transfer at up to 20Gb/s but does not support notebook charging.

OWC ClingOn

Work with Ultimate Confidence

Active workspaces expose gear to unexpected bumps and shoves. OWC ClingOn custom cable stabilizers (available separately) screw into the OWC Dock or OWC Drive housing to reduce – if not completely eliminate – cable strain on Thunderbolt and USB-C connections so you can work with ultimate confidence even in the highest foot traffic environments.

OWC Aura Ultra III M.2 SSD with OWC Express 4M2

OWC Aura Ultra III

The perfect match for Express 4M2

Combine Express 4M2 with its perfect performance match – fast OWC Aura Ultra III NVMe M.2 SSDs. Build your own ultra-fast portable Thunderbolt 3 RAID ready external SSD, and enjoy incredible transfer speeds, capacity, and OWC reliability!

OWC Thunderbolt 3 Cable

OWC Thunderbolt Cable Included

OWC Express 4M2 solutions come with a certified 0.7 meter OWC Thunderbolt Cable. But if your workflow demands a different length to make the connection, OWC Thunderbolt (USB-C) Cables are the perfect choice.

OWC, Trusted by Pros & Enthusiasts the World Over

OWC, 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 1 Year OWC Limited Warranty and award-winning customer support.

Learn More
  1. Thunderbolt 2/Thunderbolt compatibility requires a certified Thunderbolt 3 (USB-C) to Thunderbolt 2 (mDP) adapter and a Thunderbolt 2 cable (available separately). This configuration provides data transfer at up to 20Gb/s but does not support notebook charging.
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