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Silver rectangular portable SSD with finned aluminum heat-sink enclosure and short USB4 cable

OWC

OWC Express 1M2 80G 8TB portable SSD

SKU CH-Q4EF-33Y6G

Portable NVMe SSD delivering over 6000MB/s real-world speed via USB4 with an aluminium heatsink for sustained performance across Mac, PC and iPad Pro

  • Total capacity8 TB
  • Interface typeUSB4
  • Form factorM.2 2280
  • Setup requirementsMac OS 14.x or higher, Windows 11 or higher
  • Operating temperature range41 °F - 95 °F
  • Storage temperature range-4 °F - 140 °F

Capacity 8TB

  • Real-world peak speed over 6000 MB/s for demanding creative workflows
  • USB4 interface with Thunderbolt compatibility connects to Macs, PCs, iPad Pros, Chromebooks and Surface devices
  • Patent-pending aluminium finned heatsink prevents thermal throttling for sustained performance
  • Bus-powered via included 0.3 m USB4 cable — no external power supply needed
  • User-upgradeable M.2 2280 or 2242 NVMe slot for future capacity increases

Portable 8TB NVMe for creators on the move

The OWC Express 1M2 80G delivers 8TB of NVMe storage in a bus-powered enclosure that connects via USB4. It is built for photographers, videographers and mobile professionals who need internal-drive speed without a desktop power supply. The drive works with Mac OS 14 or higher, Windows 11 or higher, iPad Pro, Chromebook and Surface devices. It is not suited for users who require legacy USB-A connectivity or operating-system versions older than those listed.

Sustained throughput with active aluminium cooling

A finned aluminium heatsink dissipates heat silently so the drive maintains peak real-world speeds over 6000MB/s during long transfers or direct-to-drive editing. Operating temperature range is 41°F to 95°F, while storage temperature spans -4°F to 140°F. The enclosure measures 2.8" wide, 5.2" deep and 0.9" high at 9.9oz. Buyers who need fan-forced cooling or enterprise-grade endurance ratings will not find them here.

Tool-free M.2 installation with one cable included

The M.2 2280 slot also accepts 2242 modules, allowing future capacity upgrades without a new enclosure. A 12" USB4 cable is supplied for immediate bus-powered operation. No external power adapter or driver installation is required on supported systems. Users without a USB4 or Thunderbolt port will not reach the advertised performance ceiling.

How it compares

Measured against everything we stock in Portable USB SSDs, at today’s prices. Recalculated every night.

Price $1,670.99
Pricier than about 91% of the 410 comparable items (median $202.99).
Total capacity 8 TB
Higher than about 93% of the 311 comparable items (median 1 TB).
Price per TB $208.87 per TB
Pricier than about 77% of the 310 comparable items (median $142.00 per TB).

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Specifications

Product
Brand nameOWC
Product lineExpress
Model name1M2 80G
Part numberUS4V2EXP1MT08
Total capacity8 TB
Product colorSilver
Ports & slots
Interface typeUSB4
Size & build
Form factorM.2 2280
Overall width2.8 in (7.11 cm)
Product depth5.2 in (13.2 cm)
Overall height0.9 in (2.29 cm)
Product weight9.9 oz
In the box
Included itemsOWC Express 1M2 80G, 0.3M (12 in) USB4 cable, User Guide
Environment & compliance
Operating temperature range41 °F - 95 °F
Storage temperature range-4 °F - 140 °F

Other versions of this model

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Questions about this item

How loud does the aluminum heatsink enclosure get during sustained 6000MB/s transfers?

The patent-pending finned aluminum design dissipates heat silently with no moving parts, so the drive runs quietly even under continuous heavy workloads.

Which host port is required to reach the advertised 80Gb/s bandwidth?

A USB4 port is required; the included 12-inch USB4 cable connects the drive to that port for full performance.

Can I keep using my Thunderbolt 3 dock with this USB4 drive?

Yes, the drive is Thunderbolt compatible and will operate through a Thunderbolt 3 connection, though at the lower Thunderbolt 3 speed ceiling.

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