OWC Express 4M2 Ultra (0TB) is a four‑slot Thunderbolt 5 NVMe M.2 enclosure supplied with SoftRAID license included.
Install your choice of PCIe 3.0/4.0/5.0 M.2 2242 or 2280 SSDs to build RAID arrays tailored to your workflow.
The second Thunderbolt 5 port supports daisy‑chaining up to five additional Thunderbolt devices plus one USB peripheral.
£ 447.95 | £ 537.54 inc VAT
In Stock
OWC Express 4M2 Ultra is a four‑slot Thunderbolt 5 NVMe M.2 enclosure sold in this SKU as 0TB with SoftRAID license included. It is engineered for high‑bandwidth desktop workflows and supports user‑installed NVMe M.2 2242 or 2280 SSDs across PCIe 3.0, 4.0 and 5.0 generations.
The enclosure combines a solid aircraft‑grade aluminum body with a smart adaptive fan and high‑speed Thunderbolt 5 connectivity to deliver sustained throughput and thermal stability in demanding creative and production environments.
Real‑world performance reaches up to 6622MB/s when connected via Thunderbolt 5 (80Gb/s) and used with PCIe 4.0 and later SSDs.
OWC Express 4M2 Ultra works with Thunderbolt 5, Thunderbolt 4 and USB4 Macs and PCs, and with Thunderbolt 3 Macs. It provides two Thunderbolt 5 (80Gb/s) ports, with the second port supporting daisy‑chaining of up to five additional Thunderbolt devices plus one USB peripheral.
Supports four NVMe M.2 drives in 2242 or 2280 form factors, single or double‑sided, across PCIe 3.0/4.0/5.0. Internal capacity can reach up to 32TB (4 × 8.0TB), and multiple units can be daisy‑chained to create a single volume up to 128TB.
Supports RAID 0, 1, 4, 5, 10 and JBOD using SoftRAID or another RAID utility, enabling configurations that prioritise performance, capacity or redundancy according to workflow needs.
The enclosure uses a solid aircraft‑grade aluminum body for passive cooling and rugged protection, and a smart adaptive fan that activates only during sustained workloads to maintain full drive speed without excessive noise.
Includes SoftRAID Premium for 3 Years to provide advanced RAID monitoring, drive validation and predictive health alerts, and includes 2 Strada licenses for 90 days to enable remote access and collaboration without cloud uploads.
The unit ships with a Thunderbolt 5 80Gb/s cable and carries a 2 Year OWC Limited Warranty.
| Model | OWC Express 4M2 Ultra |
| SKU | OWCTB5ULT4M2S |
| Configuration | 0TB (SoftRAID License Included) |
| Drive Bays | Four NVMe M.2 slots (2242 / 2280) |
| Supported SSD Form Factors | M.2 2242 and 2280, single or double‑sided |
| Supported SSD Interface | PCIe 3.0 / PCIe 4.0 / PCIe 5.0 NVMe |
| Maximum Internal Capacity | Up to 32TB (4 × 8.0TB) |
| Expandable Capacity (Daisy‑Chained) | Up to 128TB as one volume via daisy chaining additional Express 4M2 Ultra units |
| Ports | Two Thunderbolt 5 (80Gb/s) ports; second port supports daisy‑chain of up to five additional Thunderbolt devices plus one USB peripheral |
| Real‑World Speed (Thunderbolt 5) | Up to 6622MB/s (achieved 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 |
| PCIe 5.0 Speeds | Single Drive or JBOD up to 1600MB/s; RAID 0 up to 6622MB/s |
| PCIe 3.0 Speeds | Single Drive up to 950MB/s; RAID 0 up to 3800MB/s |
| RAID Levels | RAID 0 / 1 / 4 / 5 / 10 (1+0) / JBOD via SoftRAID or another RAID utility |
| Cooling | Smart adaptive fan; passive cooling via solid aircraft‑grade aluminum body |
| Enclosure Material | Solid aircraft‑grade aluminum |
| Compatibility | Thunderbolt 5, Thunderbolt 4, USB4 Macs and PCs; Thunderbolt 3 Macs |
| Software Included | SoftRAID Premium (3 Years) |
| Strada Licenses Included | 2 Strada licenses for 90 days |
| Included Cable | Thunderbolt 5 80Gb/s cable |
| 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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