Added to your Favourites
(see top Menubar)
(see top Menubar)
Glyph Atom EX40 – 1TB
High-Intensity USB4 NVMe SSD with Up to 4,000 MB/s Read/Write Speeds and 1TB Capacity
£ 306.95 | £ 368.34 inc VAT
OWC Express 1M2 40G – 4TB
OWC Express 1M2 40G – 4TB
4TB Portable USB4 40Gb/s NVMe SSD With Up To 3836MB/s Performance
The OWC Express 1M2 40G – 4TB is a ready-to-run portable USB4 40Gb/s NVMe SSD for demanding creative, backup and high-speed production workflows.
This 4TB configuration combines the Express 1M2 aluminium enclosure with a factory-installed OWC NVMe M.2 SSD, delivering real-world performance of up to 3836MB/s depending on host system, workload and connection type.
- 4TB factory-installed NVMe M.2 SSD
- USB4 40Gb/s interface with up to 3836MB/s real-world performance
- Compatible with USB4, Thunderbolt 5, Thunderbolt 4, Thunderbolt 3 and supported USB-C hosts
- Fanless aluminium heatsink design for sustained thermal performance
- Bus-powered portable operation with included 0.3m USB-C 40Gb/s cable
Category: Portable Hard Drives & RAIDs
Brand: OWC
£ 884.95 | £ 1,061.94 inc VAT
In Stock
OWC Express 1M2 40G – 4TB Product Overview
The OWC Express 1M2 40G - 4TB combines a high-performance USB4 enclosure with 4TB of factory-installed NVMe M.2 storage, providing a compact ready-to-use external drive for professional media and data workflows.
Its USB4 40Gb/s architecture is designed to maximise performance on suitable USB4 and Thunderbolt-equipped systems while retaining compatibility with supported lower-bandwidth USB-C hosts.
4TB Ready-To-Run NVMe Storage
This exact OWCUS4EXP1MT04 configuration is supplied with a 4TB OWC NVMe M.2 SSD installed, providing a complete high-capacity storage solution without requiring separate drive installation.
Up To 3836MB/s USB4 Performance
OWC specifies Express 1M2 real-world performance of up to 3836MB/s on a suitable USB4 40Gb/s or Thunderbolt 4 PC host. Actual throughput varies with host platform, workload and connection type.
Broad USB4 And Thunderbolt Compatibility
The Express 1M2 works with USB4, Thunderbolt 5, Thunderbolt 4, Thunderbolt 3 and supported USB-C devices. Connection speed automatically adapts to the capabilities of the attached host.
Passive Aluminium Thermal Management
The solid aluminium enclosure forms part of the cooling system, dissipating heat from the installed NVMe SSD without a fan and helping maintain consistent performance during sustained transfers.
Portable Bus-Powered Operation
Power and data are supplied through the USB-C connection, so no external power adapter is required. OWC includes a 0.3m USB-C 40Gb/s cable.
High-Capacity Professional Storage
With 4TB of installed NVMe storage, high throughput and silent operation, the Express 1M2 is well suited to high-resolution video editing, DIT media offloads, photography libraries, scratch storage, backup and other data-intensive workflows.
OWC Express 1M2 40G – 4TB Key Features
- 4TB factory-installed OWC NVMe M.2 SSD
- USB4 40Gb/s USB-C host interface
- Up to 3836MB/s real-world Express 1M2 performance
- Compatible with USB4, Thunderbolt 5, Thunderbolt 4, Thunderbolt 3 and supported USB-C hosts
- Solid aluminium passive heatsink enclosure
- Fanless operation
- Bus powered with no external power adapter required
- Includes 0.3m USB-C 40Gb/s cable
- Secure screw-together enclosure construction
- 3-year OWC limited warranty for populated storage solutions
OWC Express 1M2 40G – 4TB Technical Specifications
| Product | OWC Express 1M2 40G - 4TB |
| Manufacturer Part Number | OWCUS4EXP1MT04 |
| Configuration | Ready-To-Run Storage Solution |
| Capacity | 4TB |
| Drive Type | NVMe M.2 SSD |
| Drive Bays | 1 |
| Host Interface | USB4 40Gb/s |
| Host Connector | USB-C |
| Maximum Interface Rate | 40Gb/s / 5000MB/s |
| Maximum Real-World Performance | Up To 3836MB/s |
| Host Compatibility | USB4, Thunderbolt 5, Thunderbolt 4, Thunderbolt 3 And Supported USB-C Hosts |
| Cooling | Passive Aluminium Heatsink Design |
| Power | Bus Powered |
| Included Cable | 0.3m / 12-Inch USB-C 40Gb/s Cable |
| Warranty | 3-Year OWC Limited Warranty |
OWC Express 1M2 40G – 4TB – Product Videos
OWC Delivery Information
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.
