OWC Launches Thunderbolt 5 NVMe SSD Enclosure for Pros

New OWC Express 4M2 Ultra offers up to 6622MB/s speeds in a compact, customizable design.

Apr. 18, 2026 at 12:45pm

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A highly detailed, glowing 3D illustration of a sleek, angular NVMe SSD enclosure with illuminated ports and components in a palette of neon cyan and magenta, conceptually representing the OWC Express 4M2 Ultra's advanced Thunderbolt 5 technology.The OWC Express 4M2 Ultra's glowing, high-tech design reflects its powerful Thunderbolt 5 performance for professional video and audio workflows.Woodstock Today

Other World Computing (OWC) has announced the launch of the OWC Express 4M2 Ultra, the first certified Thunderbolt 5 four-slot NVMe M.2 SSD enclosure. Built for professionals seeking the fastest DIY RAID performance in a compact design, the OWC Express 4M2 Ultra enables users to install their choice of NVMe M.2 drives and configure in various RAID modes for speeds up to 6622MB/s.

Why it matters

The OWC Express 4M2 Ultra provides creative and business professionals with a powerful, customizable storage solution that can deliver exceptional performance for intensive workflows like 8K+ video editing. As Thunderbolt 5 technology emerges, this enclosure allows users to future-proof their setups with the latest high-speed connectivity.

The details

The OWC Express 4M2 Ultra features a solid aircraft-grade aluminum body and smart adaptive fan for effective and quiet thermal management. It supports RAID 0, 1, 4, 5, or 10, as well as JBOD configurations. A second Thunderbolt 5 port enables daisy chaining of up to five additional Thunderbolt devices, including more Express 4M2 Ultra enclosures. The enclosure is compatible with Thunderbolt 5, 4, 3 (Mac only), and USB4 systems.

  • The OWC Express 4M2 Ultra will be showcased live for the first time at the NAB 2026 show.
  • The OWC Express 4M2 Ultra is available for pre-order now and will begin shipping in Q3 of 2026.

The players

Other World Computing (OWC)

A trusted leader in high-performance storage, memory, connectivity, software, and accessories that empower creative and business professionals.

Larry O'Connor

Founder and CEO of Other World Computing (OWC).

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What they’re saying

“The OWC Express 4M2 Ultra is the fastest compact DIY NVMe RAID. Period. Thunderbolt 5 unlocks extraordinary bandwidth, and we designed this enclosure to let professionals harness every bit of it using the drives they trust and the RAID configuration their workflow demands.”

— Larry O'Connor, Founder and CEO, Other World Computing (OWC)

What’s next

The OWC Express 4M2 Ultra will begin shipping in Q3 of 2026.

The takeaway

The OWC Express 4M2 Ultra provides creative professionals with a powerful, customizable storage solution that leverages the latest Thunderbolt 5 technology to deliver exceptional performance for intensive workflows, allowing them to future-proof their setups.