Accelsior Pro 4M2 16.0TB with Softraid

Other World ComputingSKU: OWCSSDACL4M216T
LG Authorized

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Sale price$2,495.99

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Description

Accelsior Pro 4M2 16.0TB with Softraid

Meet the Fastest OWC SSD Ever Built

When OWC launched its first Solid State Drive in 2010, it was engineered to deliver the same attribute formula that Mac and PC users expected from OWC external storage solutions:

High performance + high reliability + affordable price = The OWC Difference

Nearly a decade later, our commitment to that winning formula remains steadfast as we push the boundaries of leading-edge SSD development with the Accelsior 4M2. It's ideal for uncompromised, data intensive, high bandwidth needs like large format video editing, VR/AR/MR environments, high transactional and complex calculation applications, and extreme gaming.

Accelsior 4M2 houses four OWC Aura Ultra III NVMe M.2 SSDs under a finned heat sink cover that provides silent, throttle-free cooling. These "blade" style SSDs utilize Quad-Level Cell (QLC) 3D NAND with SLC caching and a Phison E12 controller with 7% over-provisioning.

All those "ingredients" combine to deliver over 6,000MB/s real-world speed with the highest reliability possible to satisfy the biggest storage performance appetite.

Highly Versatile with Mobile Possibilities

Whether you have the Mac Pro 2019, a Mac Pro 2012 or 2010, or PC tower, Accelsior 4M2 can go to work for you. As a half-length x8/x16 compatible card, this game-changer offers the versatility you need, so you're not tied to one slot size or limited by a space-confined computer case.

You can also enjoy the performance boosting benefits of Accelsior 4M2 with your Thunderbolt 3-equipped notebook computer, iMac workstation, or slot filled gaming rig. It's plug-and-play easy with a PCIe expansion chassis like theOWC Mercury Helios 3S.

Change Your Reality

Accelsior 4M2 offers performance gains in so many diverse ways that it will change your storage reality:


  • Stream and edit high-res video and graphics files without a glitch.

  • Experience faster previews, renders, and processing in VFX programs.

  • Keep page scenery and textures looking sharp and flowing uninterrupted in virtual reality environments.

  • Enhance the realism of augmented reality visualizations.

  • Change levels seamlessly and play simulation and MMO games with continuously changing scenery or heavy mods without micro-stuttering.

  • Give your computer a significant speed boost with improved system "snappiness," a fast OS boot drive, or a bottleneck-free scratch drive.

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-PerformanceRAID 0/1/4/5/1+0 (10) volumes

  • Predictive Health Monitoringproactively notifies of Volume and Disk issues well before failure - provided on your computer and remotely

  • 35+ Years of Experienceof 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

SoftRAID works with macOS 10.14+, Windows 10+, and Windows Server 2019/2022. M1 Macs require macOS 11.3 or later. SoftRAID is licensed per computer.

Professional Grade = Ready to Work

We understand having confidence in gear reliability is paramount to creative professionals. That's why every Accelsior 4M2 pre-configured solution undergoes a multi-step performance certification prior to shipping. This ensures your Accelsior 4M2 arrives operating properly and immediately ready for demanding use.



  • Supercharges Mac and PC: ideal for Mac Pro 2019, Mac Pro 2012 or 2010, and PC towers

  • Work faster: over 6,000MB/s real-world speed in RAID 0

  • Store more: add capacity for critical footage, images, files, and games

  • Includes SoftRAID:

  • robust software for creating, monitoring, and managing advanced RAID sets

  • Silent cooling: finned heat sink cover for fanless operation

  • Highly versatile: installs into a full-height, half-length x8 or x16 PCIe 3.0 or 2.0 slot

  • Plug and play: no drivers needed

  • 5 Year OWC Limited Warranty

Payment & Security

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Your payment information is processed securely, and we do not store credit card details or access your credit card information.

Return Policy (Short Summary)

We offer a 30-day return window for most unopened, factory-sealed items.

Returns must be authorized before shipping back and must include all original packaging and accessories. Opened or used items are not returnable unless defective.


Some products—such as custom orders, special-order items, audio gear, software, and LED video walls—are non-returnable. Non-defective returns may be subject to a 20–30% restocking fee, and customers are responsible for return shipping costs.


For damaged or incorrect items, please contact us immediately.


Learn more →

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A clear difference in expertise, service, and speed.

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Broad, generalized inventory
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Quote Turnaround Time
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Same day or faster
Account Management
Rotating reps or ticket-based
Dedicated account manager
Price Flexibility
Fixed pricing, little room to negotiate
Flexible pricing & discounts
Customer Support
Scripted or outsourced
Personalized support by AV experts
Order Fulfillment Transparency
Varies by brand
Transparent lead times & availability
B2B Purchasing Support
Limited PO handling
Supports POs, wire transfers, and tax-exempt setup
Project Consultation
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Full turnkey project capabilities
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10+ years in Pro AV
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Authorized dealer for 150+ brands
Warranty & Support
Standard manufacturer warranty
Extended warranty options available
Installation Services
Referral to third parties
In-house installation team
Training & Onboarding
Basic documentation only
Comprehensive training included

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