OWC Express 4M2 Four-Slot USB4 (40Gb/s) External Storage Enclosure with SoftRAID for NVMe M.2 2230 / 2242 / 2280 SSDs

The OWC Express 4M2 is a high-performance four-slot external storage enclosure that leverages USB4 technology to deliver blazing-fast data transfer speeds of up to 40Gb/s. Designed for NVMe M.2 SSDs in 2230, 2242, and 2280 form factors, it provides a versatile and expandable storage solution for creative professionals, IT administrators, and power users. With included SoftRAID XT software, you can configure RAID 0, 1, 4, 5, 10, JBOD, or SPAN to optimize performance, data protection, or capacity. The aluminum enclosure ensures efficient heat dissipation, while an integrated fan maintains optimal operating temperatures. Daisy-chain support via Thunderbolt allows connection of multiple devices, and the enclosure can drive up to 8K displays through Thunderbolt daisy chain. The included external AC adapter provides reliable power, and a Kensington lock slot adds physical security.

Advantages

Unmatched speed with USB4 40Gb/s interface, backward compatible with Thunderbolt 4 and USB-C. Four independent NVMe M.2 slots support up to 32TB total capacity (8TB per slot). SoftRAID XT included for flexible RAID configurations without additional cost. Robust aluminum construction with active cooling ensures sustained performance. Thunderbolt daisy chain support simplifies connectivity and display output.

Suitable for

• Video editors and content creators requiring fast, large-capacity external storage
• IT professionals deploying RAID arrays for data redundancy or speed
• Users with NVMe M.2 SSDs in 2230, 2242, or 2280 sizes seeking an external enclosure
• Mac and Windows users needing high-speed external storage with RAID capabilities

Key specifications

• Host Interface: USB4 (Thunderbolt 4 / USB-C compatible)
• Max Data Transfer Rate: 40 Gb/s
• Number of Drive Bays: 4
• Drive Type Compatibility: NVMe M.2 SSD
• M.2 Form Factors Supported: 2230, 2242, 2280
• RAID Support: Yes (SoftRAID XT included)
• Supported RAID Modes: RAID 0, 1, 4, 5, 1+0 (10), JBOD, SPAN
• Max Total Storage Capacity: Up to 32TB (8TB per slot)
• Cooling System: Integrated fan
• Enclosure Material: Aluminum
• Operating System Compatibility: macOS 10.14.6 or later, Windows 10 or later
• Daisy Chain Support: Yes (Thunderbolt)
• Display Support: Yes (via Thunderbolt daisy chain, up to 8K)
• Power Supply: External AC Adapter
• Included Software: SoftRAID XT (license included)
• Security: Kensington Lock Slot

Recommendations

For optimal performance, use NVMe M.2 SSDs that support PCIe 3.0 or higher. The enclosure is compatible with both Mac and Windows systems; ensure your system has a USB4 or Thunderbolt 4 port to achieve full 40Gb/s speeds. SoftRAID XT provides advanced RAID management; refer to the user manual for configuration guidance.