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Owc OWCUS4EXP4M2S NAS Servers Owc Express 4m2 Usb4 (40gb/s) Four-slot Nvme M.2 Enclosure With Softraid - Up To 3200mb/s - 4x Nvme  810179174330

Part Number: OWCUS4EXP4M2S
Condition: New
Availability: 2  
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Product Specifications



OWC Express 4M2 USB4 (40Gb/s) Four-Slot NVMe M.2 Enclosure With SoftRAID - Up to 3200MB/s - 4x NVMe M.2 2230/42/80 Slots - SoftRAID Premium (3 Year) Included - RAID 0/1/4/5/1+0 (10)/JBOD - 2 Year Limited Warranty (OWCUS4EXP4M2S)

OWC EXPRESS 4M2 USB4 40GB/S FOUR SLOT NVME M.2 SSD ENCLOSURE WITH SOFTRAID - UP

Manufacturer Part Number: OWCUS4EXP4M2S



CPN:OWC EXPRESS 4M2 USB4 40GB/S FOUR SLOT NVME M.2 SSD ENCLOSURE WITH SOFTRAID - UP
MANUFACTURER NAME: Owc
MANUFACTURER PART NUMBER: OWCUS4EXP4M2S
UPC EAN CODE: 810179174330
LANGUAGE: EN
MARKET:US

General Information:

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. 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 utilize the maximum performance capability of your Mac or PC with full compatibility:

More from the Manufacturer

ManufacturerOther World Computing
Manufacturer Part NumberOWCUS4EXP4M2S
Manufacturer Website Addresshttps://www.owc.com/
Brand NameOWC
Product LineExpress
Product NameExpress 4M2 USB4 (40Gb/s) External Storage Enclosure
Packaged Quantity1
Product TypeDAS Storage System
  Product UPC810179174330
Storage:
Number of Solid State Drive Supported4
Maximum Data Transfer Rate40 Gbit/s
I/O Expansions:
Number of Total Expansion Bays4
Controllers:
Non-RAID ModeJBOD
RAID SupportedYes
RAID Levels0, 1, 4, 5, 10, JBOD
Software RAID SupportedYes
Interfaces/Ports:
Drive InterfaceM.2
Host InterfaceUSB4
Total Number of USB Ports1
Number of USB4 Ports1
Software:
Operating System SupportedmacOS Sonoma 14.x
macOS Sequoia 15.x
Windows 10
Windows 10 x64
Windows Server 2019
Windows Server 2016
Windows Server 2022
Windows 11
Power Description:
Maximum Power Supply Wattage48 W
Physical Characteristics:
Cooling FanYes
Height5.5"
Width2.4"
Depth7"
Form FactorExternal
Weight (Approximate)3.97 lb
Miscellaneous:
What's in the box
  • Express 4M2 USB4 (40Gb/s) External Storage Enclosure
  • 1 x 0.7M (28") USB-C 40Gb/s Cable
  • 1 x External Power Supply
  • 1 x US Power Cable (2-Prong IEC C7)
  • Support Manual for OWC USB4 Express 4M2(digital)
  • 1 x Quick Start Guide for OWC SoftRAID (Digital)
Warranty:
Warranty2 Year

Date Inserted: Sunday January 11, 2026

This product was last updated on Tuesday April 21, 2026

All products are brand new and factory sealed unless otherwise stated.
 *** Disclaimer- Information is supplied by the Manufacturer. The image, including color, may differ from actual product appearance. CompSource, Inc. is not responsible for data. ***

Questions and Answers

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Shipping / Returns

Shipping

Ground = $12.95
(EST. Arrival Date between Fri.Apr.24 - Wed.Apr.29)

Two Day Air = $29.00
(EST. Arrival Date on Fri.Apr.24)

Standard One Day = $53.00
(EST. Arrival Date on Thu.Apr.23 after 3PM)

Priority = $78.00
(EST. arrival Date on Thu.Apr.23 in the AM)

U.S Mail Priority (AA,AE,AP only) = $41.00

FedEx International Economy (Canada only) = $89.00

Shipping dates are best estimates based on product location and may vary with holidays.

If product requires trucking, additional fees may apply.

* Some destinations are subject to Applicable State/Duty Taxes

Returns

CompSource realizes that every product may have different return guidelines. Please see the policy below regarding this item.

This Product Has Limited Exchange Privileges.

Limited returns within 30 days of purchase permitted on this product.

For support on this product, please contact Owc.


Owc Company's Information

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    About Owc

    Why Buy OWC Products from Compsource

    Other World Computing (OWC) has been a trusted name in the Apple ecosystem since 1988. Founded by Larry O’Connor in Woodstock, Illinois, OWC has grown into a global leader in Mac and iOS upgrades, offering over 3,000 products and shipping to more than 190 countries.

    What OWC Offers

    • High-performance SSDs and memory upgrades for Macs
    • External storage solutions including RAID arrays and portable drives
    • Docking stations, cables, and accessories for Apple devices
    • Software tools and educational resources to empower DIY upgrades

    Why Choose OWC?

    OWC is known for its commitment to quality, innovation, and sustainability. Their LEED Platinum-certified campus runs on renewable energy, including solar arrays and a wind turbine that makes them a net energy producer. Their products are designed and assembled in the USA, and they offer industry-leading warranties and customer support.

    Why Buy OWC from Compsource?

    • Authorized Reseller: Compsource is a trusted partner offering genuine OWC products.
    • Competitive Pricing: Get the best deals on OWC upgrades and accessories.
    • Fast Shipping: Nationwide delivery with excellent customer service.
    • Expert Support: Our team helps you choose the right OWC solution for your needs.

    We want this to be as easy and stress-free as possible. CompSource is here to help with your OWC purchase. We're here to help you decide. Chat with us or give our professionals a quick phone call (800)-413-7361, we can assist with the best OWC solution for your needs and budget.

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    About the Author

    Mason Maynard - Marketing Manager of CompSource

    Mason Maynard

    Mason Maynard is a people-oriented individual who finds joy in spending quality time with friends and family, valuing strong personal connections. With a strong interest in Marketing and Sales, Mason thrives on creating impactful strategies that engage audiences and drive meaningful results. Mason is passionate about innovation, business growth, and delivering top-tier customer service.

    Connect with Mason on: LinkedIn


    Learn more about NAS Servers

    CompSource offers solutions for anywhere data lives! Since our start in 1991 we have seen massive changes and efficiency's in traditional Hard Drive storage. Now we are seeing Hard Drives that use flash memory with no moving parts to drastically improve speed called SSD Drives. Recently released even faster speeds and longevity from Intel Optane Drives!

    Data is extremely valuable please consider backing up your storage, here are some options from good to best options.
    Flash, Thumb, or USB Drives, External Hard Drives or NAS Servers.


    We want this to be as easy and stress-free as possible. That's why we're offering to install everything for you. The expertly trained professionals from Buy It Installed provide high-quality service and will get everything up and running with little to no hassle on your end.

    We're here to help you decide. Chat with us or give our professionals a quick phone call (800)-413-7361, we can assist with the best solution for your needs and budget.


    I'll tell you why you got this sale: it's because your price was the same as ProVantage, and you didn't charge for shipping. I do a fair amount of purchasing; if all my transactions would go this smoothly, I'd be a happy man. I'll send a few more your way, from now on. Thanks again, -Jack Anonymous
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