OWC Express 4M2 Ultra is a four‑slot Thunderbolt 5 NVMe M.2 enclosure sold as a 0TB bare unit with SoftRAID not included.
Populate it with PCIe 3.0, 4.0 or 5.0 NVMe M.2 drives to build a high‑performance RAID tailored to workflow needs.
£ 325.95 | £ 391.14 inc VAT
In Stock
OWC Express 4M2 Ultra is a four‑slot Thunderbolt 5 NVMe M.2 enclosure offered as a 0TB bare unit with SoftRAID not included. It is designed for professionals who want a DIY NVMe RAID platform that takes full advantage of Thunderbolt 5 bandwidth.
The chassis supports PCIe 3.0, 4.0 and 5.0 NVMe M.2 drives and scales from a single enclosure up to larger unified volumes by daisy chaining additional units.
Thunderbolt 5 (80Gb/s) connectivity delivers up to 6622MB/s real‑world speed when populated with PCIe 4.0 and later SSDs. When connected to Thunderbolt 4 or USB4 systems, speeds reach up to 3200MB/s, and Thunderbolt 3 hosts can achieve up to 2800MB/s.
Supports four NVMe M.2 2242 or 2280 SSDs, single or double‑sided, and accepts PCIe 3.0 / 4.0 / 5.0 SSDs. The enclosure accepts up to 8.0TB per drive for up to 32TB total in one unit and can expand up to 128TB as a single volume by daisy chaining additional Express 4M2 Ultra units.
The unit supports RAID 0, 1, 4, 5, 10 and JBOD via OWC SoftRAID or other RAID utilities; SoftRAID is compatible but not included with this 0TB SKU.
Provides two Thunderbolt 5 (80Gb/s) ports. The second Thunderbolt 5 port allows daisy chaining of up to five additional Thunderbolt devices plus one USB peripheral for expanded capacity and connectivity.
The solid aircraft‑grade aluminum body delivers passive cooling and rugged protection, while a smart adaptive fan activates only during sustained workloads to avoid unnecessary noise.
Compatible with Thunderbolt 5, Thunderbolt 4, and USB4 Macs and PCs as well as Thunderbolt 3 Macs for broad workstation use.
Includes a Thunderbolt 5 80Gb/s cable. The product carries a 2 Year OWC Limited Warranty.
| Product | OWC Express 4M2 Ultra 60TB (SoftRAID Not Included) |
| Manufacturer SKU | OWCTB5ULT4M2 |
| Interface | Thunderbolt 5 (80Gb/s) |
| Ports | Two Thunderbolt 5 (80Gb/s) ports |
| Daisy Chain | Up to five additional Thunderbolt devices plus one USB peripheral |
| Drive Bays | Four NVMe M.2 bays (2242 / 2280), single or double-sided |
| Supported SSD PCIe Generations | PCIe 3.0 / PCIe 4.0 / PCIe 5.0 NVMe M.2 SSDs |
| RAID Levels Supported | RAID 0 / 1 / 4 / 5 / 10 / JBOD via SoftRAID or other RAID utility |
| Configured Capacity | 0TB (Bare enclosure) |
| Maximum Single-Drive Capacity | Up to 8.0TB per drive |
| Maximum Enclosure Capacity | Up to 32TB |
| Expandable Volume Capacity | Expand up to 128TB as one volume via daisy chaining additional Express 4M2 Ultra units |
| Real-World Speed (Thunderbolt 5) | Up to 6622MB/s (with PCIe 4.0 and later SSDs) |
| Real-World Speed (Thunderbolt 4 / USB4) | Up to 3200MB/s |
| Real-World Speed (Thunderbolt 3) | Up to 2800MB/s |
| Single-Drive / JBOD Speeds | PCIe 5.0: Up to 1600MB/s; PCIe 3.0: Up to 950MB/s |
| RAID 0 Speeds by PCIe Generation | PCIe 5.0: Up to 6622MB/s; PCIe 3.0: Up to 3800MB/s |
| Cooling | Smart adaptive fan; aircraft-grade aluminum body |
| Compatibility | Use with Thunderbolt 5, Thunderbolt 4, and USB4 Macs and PCs and Thunderbolt 3 Macs |
| Included Accessories | Thunderbolt 5 80Gb/s cable |
| SoftRAID | Compatible with OWC SoftRAID or other RAID utilities; SoftRAID not included with this SKU |
| Warranty | 2 Year OWC Limited Warranty |
Generally, next working day delivery services (UK Mainland) are available on standard OWC Delivery orders placed before 2 pm (subject to stock availability).
Non-timed deliveries should be delivered between 9 am and 6 pm.
Orders placed after 2 pm on Fridays and weekends will be processed as normal the following Monday.
Orders placed on Bank Holidays will be processed the next working day.
If urgent, please call one of our helpful account managers so they may double check everything for you, enabling you to place your order with confidence.
Please note: these product details are for guide purposes only, and may contain errors.
We always recommend double-checking the product specs and features on the the manufacturer website, or contact us if unsure before ordering.
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