The Glyph Atom EX40 4TB is a rugged, bus-powered USB4 portable NVMe SSD designed for demanding video, photography, VFX, audio and on-location workflows. Its 40Gbps USB4 Type-C interface delivers transfer speeds up to 4,000MB/s on a compatible host, providing the bandwidth needed for multi-stream 8K/12K, RAW media, large project files and rapid production offloads.
A solid aluminium core and outer shell increase the thermal ceiling for sustained workloads, while fanless cooling, real-time integrated health monitoring and MIL-Standard 810F resistance to shock, vibration and dust support dependable professional use.
£ 757.95 | £ 909.54 inc VAT
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The Glyph Atom EX40 4TB is the 40Gbps USB4 member of Glyph's high-intensity Atom EX portable SSD family. It combines high-bandwidth NVMe storage with a rugged, thermally efficient enclosure for creators who need sustained performance during large transfers and intensive direct-from-drive workflows.
With transfer speeds up to 4,000MB/s on supported hosts, the EX40 is positioned for multi-stream 8K/12K video, oversized RAW photo and video files, VFX timelines, VR projects, fast media backup and other production workloads where both bandwidth and sustained behaviour matter.
The EX40 uses a USB4 Type-C interface with up to 40Gbps link bandwidth. Glyph specifies read and write speeds up to 4,000MB/s, providing substantially more headroom than conventional 10Gbps and 20Gbps portable SSD connections.
Glyph specifies up to 3,500MB/s on Apple Silicon Macs using Thunderbolt 3 or 4, and up to 4,000MB/s on Apple Silicon Thunderbolt 5 systems, USB4 40Gbps PCs and Thunderbolt 4 PCs. Intel Mac or PC Thunderbolt 3 connections and ordinary 10Gbps USB-C connections operate in a 10Gbps USB mode with speeds up to 1,050MB/s.
Glyph's Atom EX family uses SteadyIO technology to deliver consistent, uninterrupted read and write speeds during extended transfers. The design is aimed at production workloads such as long card dumps, full-day backups and direct-from-drive editing where sustained throughput matters more than a brief benchmark peak.
A solid aluminium core and outer shell conduct heat away from internal components. Combined with fanless heat dissipation, this passive design is intended to support higher sustained speeds and reliability without adding fan noise or another moving part.
The aluminium exo-skeleton is paired with a soft composite bumper and carries a MIL-Standard 810F rating for shock, vibration and dust resistance, making the EX40 well suited to production kits, mobile workstations and location workflows.
Glyph includes real-time integrated health monitoring, adding useful visibility into drive condition for professionals relying on the SSD as active project and production storage.
The USB4 Type-C interface is compatible with USB 3.1 and USB 3.0 as well as Thunderbolt 3, 4 and 5 hosts, subject to the performance limits of the connected port. The drive is supplied formatted for macOS and can be reformatted for Windows.
The EX40 draws power from the host connection, eliminating the need for an external power supply. Its compact 2.8 x 4.5 x 0.8-inch enclosure is supplied with a 30cm USB4 Type-C to Type-C cable and a rugged removable external cover.
Glyph backs the Atom EX40 with three years of full hardware coverage, including the supplied cable, two years of Level-1 data recovery and one year of advance replacement. Glyph also states that the Atom EX range is designed, tested and assembled in the USA.
| Manufacturer | Glyph Production Technologies |
| Product | Atom EX40 High-Intensity USB4 NVMe SSD |
| Manufacturer Part Number | A40EX4000 |
| UPC | 691450005754 |
| Capacity | 4TB |
| Storage Technology | NVMe SSD |
| Interface | USB4 Type-C (40Gbps) |
| Maximum Read Speed | Up to 4,000MB/s on a supported host |
| Maximum Write Speed | Up to 4,000MB/s on a supported host |
| Apple Silicon Mac With Thunderbolt 3/4 | Up to 3,500MB/s |
| Apple Silicon Mac With Thunderbolt 5 | Up to 4,000MB/s |
| USB4 40Gbps PC | Up to 4,000MB/s |
| Thunderbolt 4 PC | Up to 4,000MB/s |
| Intel Mac / PC With Thunderbolt 3 | Up to 1,050MB/s (USB 10Gbps mode) |
| USB-C 10Gbps Host | Up to 1,050MB/s |
| Backward Compatibility | USB 3.1, USB 3.0 and Thunderbolt 3/4/5 hosts, subject to host interface limits |
| Sustained-Performance Technology | SteadyIO |
| Power | Bus-powered |
| Cooling | Fanless passive heat dissipation |
| Construction | Solid aluminium core and outer shell; aluminium exo-skeleton with soft composite bumper |
| Rugged Rating | MIL-Standard 810F for shock, vibration and dust resistance |
| Health Monitoring | Real-time integrated health monitoring |
| Compatibility | Formatted for macOS; Windows compatible after reformatting |
| Drive Dimensions | 2.8 x 4.5 x 0.8in |
| Retail Box Dimensions | 4.1 x 6.2 x 1.65in |
| In The Box | Glyph Atom EX40 External SSD, USB4 Type-C to Type-C 30cm cable, rugged removable external cover |
| Warranty | 3-year full hardware; 2-year Level-1 data recovery; 1-year advance replacement |
Generally, next working day delivery services (UK Mainland) are available on standard Glyph Technology 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 manufacturer website, or contact us if unsure before ordering.
