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Key Features
Compatibility
Product Description
OWC Express 1M2 USB4 NVMe SSD Enclosure – High-Speed Portable Thunderbolt Storage
Unleash next-generation speed with the OWC Express 1M2 — a high-performance portable enclosure designed for USB4 and Thunderbolt-enabled systems. Whether you're editing 4K video, managing large data sets, or need ultra-fast external storage, this sleek enclosure delivers real-world speeds up to 3800 MB/s when paired with compatible NVMe M.2 SSDs. Its solid aluminium body doubles as a heat sink for passive cooling, ensuring stable performance without noisy fans.
Compatible with M.2 NVMe drives in 2230, 2242, and 2280 form factors, the Express 1M2 gives you full flexibility to upgrade or expand your storage at any time. Ideal for professionals, creators, and performance users on the go.
Key Features:
- Supports USB4 (40 Gb/s) with backward compatibility to Thunderbolt 4, Thunderbolt 3, and USB-C
- Real-world transfer speeds up to 3800 MB/s
- Fanless aluminium design provides silent, efficient cooling
- Tool-free installation for 2230 / 2242 / 2280 NVMe M.2 SSDs
- Bus-powered with no external power supply required
- 2 year Warranty
- Note: Drive not included. Performance results will vary depending on the user-installed drive. Want enclosure with SSD installed? Click here.
Included:
- OWC Express 1M2 Enclosure
- 0.3M (12") USB4 (USB-C) Cable
- Phillips PH1 mini Screwdriver
- Quick start guide
Product Q&A
Q: What SSDs are compatible with this enclosure?
A: It supports M.2 NVMe SSDs in 2230, 2242, and 2280 sizes. SATA M.2 drives are not compatible.
Q: Can I use this enclosure with Thunderbolt 3 or USB-C ports?
A: Yes. While optimized for USB4, it's backward compatible with Thunderbolt 4, Thunderbolt 3, and USB-C devices (with reduced speeds). Note: Apple silicon M-series machines, PCs, and Chromebooks with an open USB4 or Thunderbolt 4 or later port can utilize the Express 1M2's 40Gb/s connectivity speed. Hosts with Thunderbolt 3 ports will experience limited performance up to 10Gb/s.
Q: Does it require an external power supply?
A: No. The Express 1M2 is bus-powered through the USB-C cable — no separate power adapter needed.
Q: Is this enclosure plug-and-play?
A: Yes. Once you install your NVMe SSD and connect the enclosure, it's ready to use without any drivers on most modern operating systems.
Q: Does it work on both Mac and Windows systems?
A: Yes, it is compatible with macOS, Windows, and Linux systems that support USB-C or Thunderbolt.
- Performance results will vary depending on user installed drive. 3151MB/s performance based on testing an 8.0TB OWC Aura Ultra IV equipped Express 1M2 connected to a 14-inch 2023 MacBook Pro (Mac14,5) with 32GB RAM and Apple M2 Max running AJA System Test (4K-Full resolution, 64GB file size, 16bit RGBA codec, single file test).
Specifications
- Vendor par number: OWCUS4EXP1M2
- Number of Bays 1
- Drive Bays
- 1 bay supporting: M.2 drives
- Supports M.2 2280, M.2 2242, M.2 2230 "M Key" drives
- NVMe SSDs with a heatsink will not fit and are not supported.
- Mechanisms Supported: NVMe M.2 SSD
- Plug and Play Yes
- Drive Interface M.2
- Device Ports (1) Host Port - USB4 (USB-C) up to 40Gb/s (5000MB/s)
- Data Transfer Rate (Maximum) USB4 : Up to 40 Gb/s (or 5000 MB/s)
- Chipset USB: ASM2464PD
- Contact Start Stops Varies depending on drive mechanism installed
- Host Port Requirements USB4 or Thunderbolt (USB-C)1 port
- External Power Adapter No
- Power Supply Bus-powered
- Security Slot No
- Power/Activity LED Yes
- Housing Color Silver
- Housing Material Aluminum
- Dimensions
- Height: 2.3 cm (0.9 in)
- Length: 13.2 cm (5.2 in)
- Width: 7.0 cm (2.8 in)
- Weight 253.0 g (0.56 lbs)
- Certifications BSMI/ CE/ FCC/ RCM/ VCCI
- Reach Certification Yes
- Ambient Temperature
- Operating: 41°F to 95°F (5°C to 35°C)
- Non-Operating: -4°F to 140°F (-20°C to 60°C)
- Humidity
- Operating: 8% to 90% non-condensing
- Non-Operating: 5% to 95% non-condensing
- Notes
- Hosts with Thunderbolt 3 ports will experience performance up to USB 10Gb/s.
- NVMe SSDs with heat sinks will not fit and are not supported
Compatibility
Mac M1/M2/M3/M4/M5
Mac Intel (Thunderbolt/USB-C)
Windows PC (Thunderbolt/USB-C)
Chromebook
Linux
iOS (iPhone/iPad) (USB-C)
Android (USB-C)
-
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
- macOS 15.x Sequoia and newer
-
PC OS Compatibility
- Windows 10 32-bit Edition
- Windows 10 64-bit Edition
- Windows Server 2016
- Windows 11 and newer
- Linux OS Compatibility Yes
-
Mobile OS Compatibility
- iPadOS 13
- iPadOS 14
- iPadOS 15
- iPadOS 16
- iPadOS 17
- iOS 17 and newer
- Android 13.x and newer
-
Other OS Compatibility
- Chrome OS
- ChromeOS version 102 and later
- Driver Required No
-
iMac
- models from 2017 onward
-
iMacPro
- 2017 iMacPro1,1 - A1862 - EMC3144
-
MacBookAir
- models from 2018 onward
-
MacBookPro
- models from 2016 onward
-
Mac Pro
- models from 2019 onward
-
Mac Pro Rack
- models from 2019 onward
-
Mac Studio
- models from 2022 onward
-
Macmini
- models from 2018 onward
-
MacBook
- 2015, 2016, 2017
-
iPad
- 2018 to newer
-
Android Smartphones & Tablets
- Compatible with Android Smartphones & Tablets with USB Type-C ports that meet the specifications listed above.
-
PC Compatible
- Compatible with PCs with USB Type-C ports that meet the specifications listed above
Product videos
Shipping & Returns
- Free UK Shipping: Delivered in approx. 2 working days
- Express Options: Faster methods available at checkout
- Free Shipping to Ireland: For orders over £100.00
- International Delivery: Times vary by destination; shipped via FedEx or DHL
- 30-Day Returns: Return within 30 days from order date
- UK, Ireland and EU Customers: Free return label provided
- Full Return Policy: Read Here
- Full Shipping Details: Read Here
Payment
Safe payment on our website.
Pay by card, Klarna, PayPal, Apple Pay, G-Pay, Shop Pay, Revolut, Bancontact, iDeal, or even bank transfer.
Customer Service
Email and chat available 24/7
Free number UK: 08001954072
International: +442838341148
Phone Line Opening Hours
- Monday - Friday: 09:00-17:00
OWC Express 1M2 (40GB/s) USB4/Thunderbolt 4 enclosure for NVMe M.2 SSDs Mac/PC - Portable External Storage
OWC Express 1M2 USB4 NVMe SSD Enclosure – High-Speed Portable Thunderbolt Storage
Unleash next-generation speed with the OWC Express 1M2 — a high-performance portable enclosure designed for USB4 and Thunderbolt-enabled systems. Whether you're editing 4K video, managing large data sets, or need ultra-fast external storage, this sleek enclosure delivers real-world speeds up to 3800 MB/s when paired with compatible NVMe M.2 SSDs. Its solid aluminium body doubles as a heat sink for passive cooling, ensuring stable performance without noisy fans.
Compatible with M.2 NVMe drives in 2230, 2242, and 2280 form factors, the Express 1M2 gives you full flexibility to upgrade or expand your storage at any time. Ideal for professionals, creators, and performance users on the go.
Key Features:
- Supports USB4 (40 Gb/s) with backward compatibility to Thunderbolt 4, Thunderbolt 3, and USB-C
- Real-world transfer speeds up to 3800 MB/s
- Fanless aluminium design provides silent, efficient cooling
- Tool-free installation for 2230 / 2242 / 2280 NVMe M.2 SSDs
- Bus-powered with no external power supply required
- 2 year Warranty
- Note: Drive not included. Performance results will vary depending on the user-installed drive. Want enclosure with SSD installed? Click here.
Included:
- OWC Express 1M2 Enclosure
- 0.3M (12") USB4 (USB-C) Cable
- Phillips PH1 mini Screwdriver
- Quick start guide
Product Q&A
Q: What SSDs are compatible with this enclosure?
A: It supports M.2 NVMe SSDs in 2230, 2242, and 2280 sizes. SATA M.2 drives are not compatible.
Q: Can I use this enclosure with Thunderbolt 3 or USB-C ports?
A: Yes. While optimized for USB4, it's backward compatible with Thunderbolt 4, Thunderbolt 3, and USB-C devices (with reduced speeds). Note: Apple silicon M-series machines, PCs, and Chromebooks with an open USB4 or Thunderbolt 4 or later port can utilize the Express 1M2's 40Gb/s connectivity speed. Hosts with Thunderbolt 3 ports will experience limited performance up to 10Gb/s.
Q: Does it require an external power supply?
A: No. The Express 1M2 is bus-powered through the USB-C cable — no separate power adapter needed.
Q: Is this enclosure plug-and-play?
A: Yes. Once you install your NVMe SSD and connect the enclosure, it's ready to use without any drivers on most modern operating systems.
Q: Does it work on both Mac and Windows systems?
A: Yes, it is compatible with macOS, Windows, and Linux systems that support USB-C or Thunderbolt.
- Performance results will vary depending on user installed drive. 3151MB/s performance based on testing an 8.0TB OWC Aura Ultra IV equipped Express 1M2 connected to a 14-inch 2023 MacBook Pro (Mac14,5) with 32GB RAM and Apple M2 Max running AJA System Test (4K-Full resolution, 64GB file size, 16bit RGBA codec, single file test).
- Vendor par number: OWCUS4EXP1M2
- Number of Bays 1
- Drive Bays
- 1 bay supporting: M.2 drives
- Supports M.2 2280, M.2 2242, M.2 2230 "M Key" drives
- NVMe SSDs with a heatsink will not fit and are not supported.
- Mechanisms Supported: NVMe M.2 SSD
- Plug and Play Yes
- Drive Interface M.2
- Device Ports (1) Host Port - USB4 (USB-C) up to 40Gb/s (5000MB/s)
- Data Transfer Rate (Maximum) USB4 : Up to 40 Gb/s (or 5000 MB/s)
- Chipset USB: ASM2464PD
- Contact Start Stops Varies depending on drive mechanism installed
- Host Port Requirements USB4 or Thunderbolt (USB-C)1 port
- External Power Adapter No
- Power Supply Bus-powered
- Security Slot No
- Power/Activity LED Yes
- Housing Color Silver
- Housing Material Aluminum
- Dimensions
- Height: 2.3 cm (0.9 in)
- Length: 13.2 cm (5.2 in)
- Width: 7.0 cm (2.8 in)
- Weight 253.0 g (0.56 lbs)
- Certifications BSMI/ CE/ FCC/ RCM/ VCCI
- Reach Certification Yes
- Ambient Temperature
- Operating: 41°F to 95°F (5°C to 35°C)
- Non-Operating: -4°F to 140°F (-20°C to 60°C)
- Humidity
- Operating: 8% to 90% non-condensing
- Non-Operating: 5% to 95% non-condensing
- Notes
- Hosts with Thunderbolt 3 ports will experience performance up to USB 10Gb/s.
- NVMe SSDs with heat sinks will not fit and are not supported
Mac M1/M2/M3/M4/M5
Mac Intel (Thunderbolt/USB-C)
Windows PC (Thunderbolt/USB-C)
Chromebook
Linux
iOS (iPhone/iPad) (USB-C)
Android (USB-C)
-
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
- macOS 15.x Sequoia and newer
-
PC OS Compatibility
- Windows 10 32-bit Edition
- Windows 10 64-bit Edition
- Windows Server 2016
- Windows 11 and newer
- Linux OS Compatibility Yes
-
Mobile OS Compatibility
- iPadOS 13
- iPadOS 14
- iPadOS 15
- iPadOS 16
- iPadOS 17
- iOS 17 and newer
- Android 13.x and newer
-
Other OS Compatibility
- Chrome OS
- ChromeOS version 102 and later
- Driver Required No
-
iMac
- models from 2017 onward
-
iMacPro
- 2017 iMacPro1,1 - A1862 - EMC3144
-
MacBookAir
- models from 2018 onward
-
MacBookPro
- models from 2016 onward
-
Mac Pro
- models from 2019 onward
-
Mac Pro Rack
- models from 2019 onward
-
Mac Studio
- models from 2022 onward
-
Macmini
- models from 2018 onward
-
MacBook
- 2015, 2016, 2017
-
iPad
- 2018 to newer
-
Android Smartphones & Tablets
- Compatible with Android Smartphones & Tablets with USB Type-C ports that meet the specifications listed above.
-
PC Compatible
- Compatible with PCs with USB Type-C ports that meet the specifications listed above