Unleash Unprecedented Speed
Experience the pinnacle of external storage performance with the OWC Envoy Ultra 4.0TB SSD. Leveraging cutting-edge Thunderbolt™ 5 technology, it delivers real-world data transfer speeds exceeding 6000MB/s—doubling the performance of Thunderbolt 4 and USB4 interfaces.
Rugged and Reliable Design
Engineered for durability, the Envoy Ultra features an IP67-rated enclosure, making it waterproof, dustproof, and crushproof. Its fanless, heat-dissipating aluminum chassis ensures silent operation even during heavy workloads.
Plug-and-Play Convenience
With an integrated Thunderbolt cable and bus-powered operation, there's no need for external power adapters. It’s truly portable and compatible with a wide range of devices, including Macs, PCs, iPad Pros, Chromebooks, and Surface models.
Built for Professionals and Enthusiasts
Whether you're a:
Digital Imaging Technician needing ultra-fast backups
Video editor working with high-resolution codecs
VFX artist handling complex compositions
Photographer managing large photo libraries
Gamer looking for top-tier load times and responsiveness
The Envoy Ultra is designed to meet and exceed your performance demands.
Full specification
What's inside
Capacity
4TB
Data Transfer Rates
Thunderbolt 5 : Up to 80Gb/s
USB4 : Up to 40Gb/s (or 5000MB/s)
Dimensions
Height: 2.0 cm (0.8 in)
Length: 13.0 cm (5.1 in)
Width: 7.5 cm (3.0 in)
HDD Details
4.0TB OWC Aura Pro IV PCIe 4.0 NVMe M.2 2280 Solid-State Drive
Interface Type
Thunderbolt 5
MPN
OWCTB5ENVU04
Operating Temperature
Operating: 41°F to 95°F (5°C to 35°C)
Non-Operating: 68°F to 140°F (20°C to 60°C)
Packaging
Retail packaging
System Requirements
Mac OS Compatibility
macOS 14.x Sonoma
macOS 15.x Sequoia
PC OS Compatibility
Windows 10 32-bit Edition
Windows 10 64-bit Edition
Windows Server 2019
Windows Server 2022
Windows 11
Linux OS Compatibility
Yes
Mobile OS Compatibility
iPadOS 17
iPadOS 18
Other OS Compatibility
Chrome OS
Excellent price, easy to order on the website, quick delivery (paid as I needed it quickly but if I hadn’t it was free), well packaged, bought as a gift and recipient very happy
I 'needed' a new phone and A1 Tech offered my choice at a very good price. Buying on-line was straightforward. Communication was excellent and the phone arrived exactly as promised. I also bought a charger which came a couple of days later, but that was fine.
First time heard and ordered from this company and have to say everything went as good as it could
The item was cheaper on here than anywhere else at the time
They kept me informed about the delivery and it arrived when they said
Great service, quick delivery and exactly as described. Not used the phone yet as, being brand new and a gift for my wife, it's not yet been used, but it looks great.
Fantastic company, prices are always great and very competitive. Ordered a few things now and delivery is always really quick. Kept up to date with order tracking and packaged well and safely. Products are exactly what they say they are.