OWCExpress 1M2 4.0TB USB4 (40GB/s) Bus-Powered Portable NVMe SSD External Storage Solution

The Ultimate Creation Tool

Give yourself the ultimate in portable creative power with the OWC Express 1M2 powered by an advanced technology OWC Aura SSD and infuse your workflow with the highest performance and reliability.

As Fast as Your Computer or Device

The Express 1M2 is the fastest single portable SSD we offer and was purposefully built to maximize the performance capabilities of today and tomorrow's USB4 equipped Macs and PCs. Experience up to an astonishing 3151MB/s speed when you use the Express 1M2 with most Macs and PCs you own from 2020 and newer. You can also enjoy highly effective performance (yep…you can edit 4K video no problem) and flexible compatibility with millions of yesterday’s Thunderbolt and USB-C machines and devices.

Don’t Get Fooled

Because we’re widely considered the Thunderbolt experts, we must know all the little details that others purposefully overlook or hide. For a bus-powered enclosure to be Thunderbolt certified, it must meet Intel power certifications. As such, speeds are limited to 1500MB/s. While many no-name brands claim to be USB4, they are in fact Thunderbolt 3 solutions that do not follow Intel specifications. Unlike those budget brand pretenders that will leave you feeling fooled and disappointed in far lower speeds, the Express 1M2’s true USB4 connectivity assures you of an astounding doubling of Thunderbolt’s speed.

Built to Handle Demanding Needs

You’ll never have to worry about thermal throttling because form meets function with the Express 1M2. Its solid aluminum heat sink design ensures proper heat dissipation so you can depend on consistent maximum performance. Unlike a snap together toolless enclosure, Express 1M2 screws together to securely protect your drive inside its rugged enclosure. And when you need to share the Express 1M2, it can work cross-platform with Macs and PCs using OWC's MacDrive software (sold separately) for peace between the platforms.

OWC Express 1M2 is ideal for:

Photo and video professionals wanting an affordable yet solid editing drive that can be used both to backup and edit demanding content including 8K RAW video, 4K video in slow-motion, ProRes and other demanding codecs, and ultra-high resolution pictures both in RAW and compressed formats.

DITs looking to assemble the NVMe of their choice while also getting maximum offload speeds (faster than Thunderbolt) and thermal stability.

Prosumers/performance enthusiasts seeking an external enclosure to clone data from an internal drive at blazingly fast speeds.

Ready to go. Right out of the box.

OWC products are loved around the world for It Just Works™ ease-of-use and reliability. To provide the highest performance, reliability, and ready-to-run convenience available, your solution comes formatted in the native APFS macOS and iPadOS file system. With OWC, you don’t have to worry about reformatting hassles or confusion like other solutions — just plug your drive into your Mac or iPad and you’re good to go.

Your Data’s Reliability is Our #1 Priority

Anyone can put a bunch of components in a housing and call it an enclosure or a drive. OWC is not just anyone. We’re a group of filmmakers, musicians, designers, content creators, and parents just like you wanting to capture and preserve that irreplaceable moment. Our data storage products go through countless hours of ongoing development testing and certification processes. We then subject them to extreme real-world abuses. The priority for some drives is to be a mass-produced, lowest price commodity. We do it differently because the reliability of your data and the longevity of an OWC product is priority #1.

Tech specs

Storage

Number of Bays 1

Drive Bays 1 bay supporting: M.2 drives

Drive Mechanism 4TB SSD NVMe PCIe 4.0 TLC SSD Drive

Mechanisms Supported

NVMe M.2 SSD

Plug and Play

Yes

Storage Interface

M.2

Ports

Device Ports

(1) Host Port - USB4 (USB-C) up to 40Gb/s (5000MB/s) - USB 3.0/USB 3.2 backwards compatible

Performance

Data Transfer Rate (Maximum)

USB4 : Up to 40 Gb/s (or 5000 MB/s)

Chipset

Chipset / Controller

USB: ASM2464PD

Reliability

Contact Start Stops

Varies depending on drive mechanism installed

Compatibility

Host Interface Requirements

USB4 or Thunderbolt (USB-C)1 port

Mac OS Compatibility

macOS 10.13 High Sierra

macOS 10.14 Mojave

macOS 10.15 Catalina

macOS 11.x Big Sur

macOS 12.x Monterey

macOS 13.x Ventura

macOS 14.x Sonoma

PC OS Compatibility

Windows 10 32-bit Edition

Windows 10 64-bit Edition

Windows Server 2016

Windows 11

Linux OS Compatibility

Yes

Mobile OS Compatibility

iPadOS 13

iPadOS 14

iPadOS 15

iPadOS 16

iPadOS 17

iOS 17

Android 13.x

Other OS Compatibility

Chrome OS

ChromeOS version 102 and later

Driver Required

No