OWC Express 1M2 Portable USB4 NVMe 4TB
Brace your workflow for the OWC Express 1M2 4TB. This ultra-compact external NVMe M.2 SSD harnesses Thunderbolt 4 and USB4 40Gb/s connectivity, enabling data transfers up to 3151MB/s. Encased in a lightweight, fanless aluminum enclosure, it delivers advanced thermal management for stable high-performance operation. With a robust 4TB capacity, this device adeptly handles intensive video editing, expansive backups, and complex workflows. Its bus-powered design eliminates clutter, while plug-and-play compatibility supports Mac, Windows, and other platforms. Whether you’re capturing multi-stream projects or swiftly moving large files, this portable storage solution streamlines demanding tasks. Secure, accelerate, and optimize your data with the OWC Express 1M2 4TB.
Brace your workflow for the OWC Express 1M2 4TB. This ultra-compact external NVMe M.2 SSD harnesses Thunderbolt 4 and USB4 40Gb/s connectivity, enabling data transfers up to 3151MB/s. Encased in a lightweight, fanless aluminum enclosure, it delivers advanced thermal management for stable high-performance operation. With a robust 4TB capacity, this device adeptly handles intensive video editing, expansive backups, and complex workflows. Its bus-powered design eliminates clutter, while plug-and-play compatibility supports Mac, Windows, and other platforms. Whether you’re capturing multi-stream projects or swiftly moving large files, this portable storage solution streamlines demanding tasks. Secure, accelerate, and optimize your data with the OWC Express 1M2 4TB.
Brace your workflow for the OWC Express 1M2 4TB. This ultra-compact external NVMe M.2 SSD harnesses Thunderbolt 4 and USB4 40Gb/s connectivity, enabling data transfers up to 3151MB/s. Encased in a lightweight, fanless aluminum enclosure, it delivers advanced thermal management for stable high-performance operation. With a robust 4TB capacity, this device adeptly handles intensive video editing, expansive backups, and complex workflows. Its bus-powered design eliminates clutter, while plug-and-play compatibility supports Mac, Windows, and other platforms. Whether you’re capturing multi-stream projects or swiftly moving large files, this portable storage solution streamlines demanding tasks. Secure, accelerate, and optimize your data with the OWC Express 1M2 4TB.
Brace your workflow for the OWC Express 1M2 4TB. This ultra-compact external NVMe M.2 SSD harnesses Thunderbolt 4 and USB4 40Gb/s connectivity, enabling data transfers up to 3151MB/s. Encased in a lightweight, fanless aluminum enclosure, it delivers advanced thermal management for stable high-performance operation. With a robust 4TB capacity, this device adeptly handles intensive video editing, expansive backups, and complex workflows. Its bus-powered design eliminates clutter, while plug-and-play compatibility supports Mac, Windows, and other platforms. Whether you’re capturing multi-stream projects or swiftly moving large files, this portable storage solution streamlines demanding tasks. Secure, accelerate, and optimize your data with the OWC Express 1M2 4TB.
in 11 offers
The lowest price for OWC Express 1M2 Portable USB4 NVMe 4TB right now is $998.99 at Upgradeable, compared across 7 retailers.
The all-time low was $443.36 on 23 Dec 2025 — today's price is 125% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 12 May 2026.
Last updated at 12/05/2026 07:19:50
OWC Express 1M2 Portable USB4 NVMe 4TB
Delivery between Thu – Mon $12.90
4TB OWC Express 1M2 USB4 Portable NVMe SSD External Storage Solution
Delivery between Thu – Mon $12.90
OWC Express 1M2 80G 4TB
Delivery between Thu – Mon $12.90
OWC Express 1M2 Portable USB4 NVMe 4TB by Ramcity
Delivery between 15–20 May $13.95
OWC Express 1M2 80G 4TB by Ramcity
Delivery between 15–20 May $13.95
OWC Express 1M2 USB4 External SSD - 4TB
Delivery $34.63
4.0TB OWC Express 1M2 USB4 (40Gb/s) Bus-Powered Portable NVMe SSD External Storage Solution
Delivery between 15–21 May $12
OWC 4TB Express 1M2 40Gb/s Portable NVMe SSD USB4 (Thunderbolt Compatible/USB-C) Ultra Fast External SSD Drive with Aluminum Heat Sink Enclosure
Free delivery between 20–26 May
OWC 4TB Express 1M2 40Gb/s Portable NVMe SSD USB4 (Thunderbolt Compatible/USB-C) Ultra Fast External SSD Drive with Aluminum Heat Sink Enclosure
Delivery between 18–21 May $29
OWC 4TB Express 1M2 40Gb/s Portable NVMe SSD USB4 (Thunderbolt Compatible/USB-C) Ultra Fast External SSD Drive with Aluminum Heat Sink Enclosure
Free delivery between 20–22 May
originally posted on bhphotovideo.com
Brought this unit to house a 4TB NVMe SSD. Super easy to do. Open the case after unscrewing a few screws. Lock in the SSD. And it works like a charm. The case is a solid aluminum construction. Very sturdy. The enclosure has the fins design for heat dissipation. So far I transferred over 2.5TB content without heating up the unit other than just warm to the touch. The unit together with the thunderbolt cable offers much faster read and write speed than off the shelve portable SSD. The combined prices are comparable too.
originally posted on macsales.com
I wanted more storage for my base M2 Mac Studio without paying a fortune so I started heavily researching the best performing external SSD solutions. I was eyeing many of the other well reviewed Thunderbolt SSD docks and almost pulled the trigger on the ACASIS one several times before seeing this OWC option released. I knew immediately that the OWC solution would work great, had an all heatsink design with no fans and OWC quality. I received mine this week and slapped in the WD Black SN850X 4TB and attached it to my Mac Studio and immediately ran Black Magic. I was delighted to see the results match the internal SSD speed and I ran a couple copy scripts from my internal SSD to this external SSD and it was done in moments. I believe this SSD enclosure is now the one ... MoreI wanted more storage for my base M2 Mac Studio without paying a fortune so I started heavily researching the best performing external SSD solutions. I was eyeing many of the other well reviewed Thunderbolt SSD docks and almost pulled the trigger on the ACASIS one several times before seeing this OWC option released. I knew immediately that the OWC solution would work great, had an all heatsink design with no fans and OWC quality. I received mine this week and slapped in the WD Black SN850X 4TB and attached it to my Mac Studio and immediately ran Black Magic. I was delighted to see the results match the internal SSD speed and I ran a couple copy scripts from my internal SSD to this external SSD and it was done in moments. I believe this SSD enclosure is now the one to beat and while the ACASIS is cheaper, the build quality of OWC Express and included Thunderbolt 4 cable makes it worth the small price premium.
originally posted on bhphotovideo.com
Had high hopes for this enclosure but it absolutely does not perform as advertised. I had both the the 1T version I bought from B&H and the empty enclosure I bought directly from OWC (because it was not available on B&H) with both performing exactly the same way. Tested it by transferring a large folder (about 70gigs) from my internal PCI 5 internal hard drive with OWC connected to one of the USB 4 port. It started off at over 2000mbs rate but instantly dropped down to around 500mbs and stayed there. Contacted OWC support and the rep not being able to assist, mentioned that the enclosure is new and I should contact the support for my motherboard to ensure it is fully updated. Decided to buy a different enclosure (Zike) just as a test and low and behold that ... MoreHad high hopes for this enclosure but it absolutely does not perform as advertised. I had both the the 1T version I bought from B&H and the empty enclosure I bought directly from OWC (because it was not available on B&H) with both performing exactly the same way. Tested it by transferring a large folder (about 70gigs) from my internal PCI 5 internal hard drive with OWC connected to one of the USB 4 port. It started off at over 2000mbs rate but instantly dropped down to around 500mbs and stayed there. Contacted OWC support and the rep not being able to assist, mentioned that the enclosure is new and I should contact the support for my motherboard to ensure it is fully updated. Decided to buy a different enclosure (Zike) just as a test and low and behold that enclosure maintained a speed of about 2500 mbs with the same internal hard used in the OWC enclosure. To add salt to the womb, the company has the most painstaking return process I have ever had the displeasure of experiencing along with a 15% restocking fee. The rep attempted to ask a ton of questions about the system I was using etc etc, even after I told him that I used another enclosure the same way and got the advertised performance, to the point where I had to annoying said I am done answering questions and just want to return the unit. The rep then put me on hold for almost 10 mins to supposedly work on the RMA only to come back on the phone to get my email address as he claimed he was still working on it and will send the RMA to my email address once done. I guess B&H has spoilt us with their out of this world amazing return procedure. There are no other company like B&H when it comes to purchasing or returning. I will never buy another OWC product directly from them or any of their product for that matter due to my experience. B&H has set the gold standard in consumer experience.
| Variant | |
| title | 4TB |
OWC Express 1M2 Portable USB4 NVMe 4TB
Delivery between Thu – Mon $12.90
4TB OWC Express 1M2 USB4 Portable NVMe SSD External Storage Solution
Delivery between Thu – Mon $12.90
OWC Express 1M2 80G 4TB
Delivery between Thu – Mon $12.90
OWC Express 1M2 Portable USB4 NVMe 4TB by Ramcity
Delivery between 15–20 May $13.95
OWC Express 1M2 80G 4TB by Ramcity
Delivery between 15–20 May $13.95
Brought this unit to house a 4TB NVMe SSD. Super easy to do. Open the case after unscrewing a few screws. Lock in the SSD. And it works like a charm. The case is a solid aluminum construction. Very sturdy. The enclosure has the fins design for heat dissipation. So far I transferred over 2.5TB content without heating up the unit other than just warm to the touch. The unit together with the thunderbolt cable offers much faster read and write speed than off the shelve portable SSD. The combined prices are comparable too.
I wanted more storage for my base M2 Mac Studio without paying a fortune so I started heavily researching the best performing external SSD solutions. I was eyeing many of the other well reviewed Thunderbolt SSD docks and almost pulled the trigger on the ACASIS one several times before seeing this OWC option released. I knew immediately that the OWC solution would work great, had an all heatsink design with no fans and OWC quality. I received mine this week and slapped in the WD Black SN850X 4TB and attached it to my Mac Studio and immediately ran Black Magic. I was delighted to see the results match the internal SSD speed and I ran a couple copy scripts from my internal SSD to this external SSD and it was done in moments. I believe this SSD enclosure is now the one ... MoreI wanted more storage for my base M2 Mac Studio without paying a fortune so I started heavily researching the best performing external SSD solutions. I was eyeing many of the other well reviewed Thunderbolt SSD docks and almost pulled the trigger on the ACASIS one several times before seeing this OWC option released. I knew immediately that the OWC solution would work great, had an all heatsink design with no fans and OWC quality. I received mine this week and slapped in the WD Black SN850X 4TB and attached it to my Mac Studio and immediately ran Black Magic. I was delighted to see the results match the internal SSD speed and I ran a couple copy scripts from my internal SSD to this external SSD and it was done in moments. I believe this SSD enclosure is now the one to beat and while the ACASIS is cheaper, the build quality of OWC Express and included Thunderbolt 4 cable makes it worth the small price premium.
Had high hopes for this enclosure but it absolutely does not perform as advertised. I had both the the 1T version I bought from B&H and the empty enclosure I bought directly from OWC (because it was not available on B&H) with both performing exactly the same way. Tested it by transferring a large folder (about 70gigs) from my internal PCI 5 internal hard drive with OWC connected to one of the USB 4 port. It started off at over 2000mbs rate but instantly dropped down to around 500mbs and stayed there. Contacted OWC support and the rep not being able to assist, mentioned that the enclosure is new and I should contact the support for my motherboard to ensure it is fully updated. Decided to buy a different enclosure (Zike) just as a test and low and behold that ... MoreHad high hopes for this enclosure but it absolutely does not perform as advertised. I had both the the 1T version I bought from B&H and the empty enclosure I bought directly from OWC (because it was not available on B&H) with both performing exactly the same way. Tested it by transferring a large folder (about 70gigs) from my internal PCI 5 internal hard drive with OWC connected to one of the USB 4 port. It started off at over 2000mbs rate but instantly dropped down to around 500mbs and stayed there. Contacted OWC support and the rep not being able to assist, mentioned that the enclosure is new and I should contact the support for my motherboard to ensure it is fully updated. Decided to buy a different enclosure (Zike) just as a test and low and behold that enclosure maintained a speed of about 2500 mbs with the same internal hard used in the OWC enclosure. To add salt to the womb, the company has the most painstaking return process I have ever had the displeasure of experiencing along with a 15% restocking fee. The rep attempted to ask a ton of questions about the system I was using etc etc, even after I told him that I used another enclosure the same way and got the advertised performance, to the point where I had to annoying said I am done answering questions and just want to return the unit. The rep then put me on hold for almost 10 mins to supposedly work on the RMA only to come back on the phone to get my email address as he claimed he was still working on it and will send the RMA to my email address once done. I guess B&H has spoilt us with their out of this world amazing return procedure. There are no other company like B&H when it comes to purchasing or returning. I will never buy another OWC product directly from them or any of their product for that matter due to my experience. B&H has set the gold standard in consumer experience.
I purchased the 4 TB version to replace a 2 TB Envoy Pro Elektron that had filled up. The Pro Elektron is smaller, but doesn't have Thunderbolt and gets really warm when in use. The Express is very intelligently designed; the whole body functions as a heat sink.I can't comment on durability because I've only had it a few weeks, but if it is as reliable as all my (many) other purchases from OWC have been, it will be a winner!
This is by far the fastest external m.2 SSD enclosure I have now. It reaches the advertised speeds (I do have to use the cable they ship it with). I have many other brands enclosures with thunderbolt interface and get about 1400 MB/s Write and 2100 MB/s Read speeds. With the OWC Express I get over 3000 MB/s Write and Read speed. Oddly if I use one of my other thunderbolt cables it gets only 900 MB/s write and 900 MB/s read speed, even though using the same thunderbolt cable with other enclosures I still get the 1400 MB/s and 2100 MB/s speed. Maybe I have to do more testing to see why this is. I certainly will buy more of the OWC Express enclosures.
When I first hooked it up to my MacBook M1 Pro, the MacBook only connected to it at USB 3.1 speed. No problem when connected via my OWC TB4 dock, so I rebooted the MacBook and had no problem connecting at USB4 speeds. The problem may have been because the NVMe card had previously been mounted in a USB 3 dock.No problem with getting ~3 GB/s speeds either directly connected or through the dock. Moving all my VMs and big games onto the this drive was a big win. I know the internal Apple drive is twice as fast, but I cant tell the difference.
This OWC Express 1M2 USB SSD enclosure looks premium, but when it's connecting to Thunderbolt 3 port of dock or MacbookPro, it'll take a long time to negoticate and recognize as a USB3.1Gen2 device which only runs at 10Gb/s. I have other USB4.0 SSD enclosures from Satechi and Orico which use the same chip controller, and they don't have such problem. They all can run at 40Gb/s with Thunderbolt 3 connection, and give SSD read/write at ~3000MB/s. This OWC thunderbolt solution is really bad.
I ordered the 0TB enclosure and found an 8TB NVMe on Amazon at a good price. Very easy to put together and it worked instantly. It's plugged into one of the 4 ports on my M1 MacBook Pro and the speeds are as advertised! No more waiting to copy large files from one drive to another or saving a Final Cut Pro project or duplicating a video or stepping through a long list of photos with the down arrow... everything is INSTANT. Very highly recommended!
With the cost of internal drives on the Apple Silicone Mac's I wanted to see if I could come close to the internal drive speeds with an external drive. I also wanted that drive to be backwards compatible with my 2010 classic Mac Pro 5,1 running the Sonnet USB 3.2 PCI card.I paired this with a 4TB Samsung 990 Pro drive, formatted it on my M1 Mac mini and did a speed test and was blown away. Almost the exact same speed as my internal drive. I then moved it over to my cMac Pro, plugged it into my USB3.2 Card and was thrilled when the drive mounted and showed the same BLISTERINGLY FAST READ/WRITE.I've only had it a few weeks but I can say my Resolve 18 exports are faster and editing in Premiere Pro feels faster too.The speed test results are on a fairly packed drive ... MoreWith the cost of internal drives on the Apple Silicone Mac's I wanted to see if I could come close to the internal drive speeds with an external drive. I also wanted that drive to be backwards compatible with my 2010 classic Mac Pro 5,1 running the Sonnet USB 3.2 PCI card.I paired this with a 4TB Samsung 990 Pro drive, formatted it on my M1 Mac mini and did a speed test and was blown away. Almost the exact same speed as my internal drive. I then moved it over to my cMac Pro, plugged it into my USB3.2 Card and was thrilled when the drive mounted and showed the same BLISTERINGLY FAST READ/WRITE.I've only had it a few weeks but I can say my Resolve 18 exports are faster and editing in Premiere Pro feels faster too.The speed test results are on a fairly packed drive with only free space 10% available.
This is the first real external drive that really performs. I set it up as a boot drive for my Mac Studio running Sonoma. It ran almost as fast as the internal drive (4TB). I really could hardly tell the difference. I used a Sabrent 2TB M.2 2280 PCIe 3.0 NVMe TLC SSD memory stick and all I can say is WOW!
| Variant | |
| title | 4TB |
