OWC Express 1M2 1TB portable SSD USB4 Thunderbolt OWCUS4EXP1MT01

Built for USB4 and Thunderbolt workflows

The OWC Express 1M2 is a portable NVMe SSD enclosure that delivers up to 3151 MB/s real-world throughput over USB4. It accepts M.2 2230, 2242 or 2280 drives and includes a 40 Gb/s USB-C cable. Creative professionals working with 4K video and performance enthusiasts needing maximum portable speed will benefit from the aluminium heat-sink design that sustains peak transfer rates.

Check your host port and drive choice

Verify that your computer provides a USB4 or Thunderbolt 3/4 port with a USB-C connector to reach the advertised speed; older USB-C ports will operate at lower rates. You must supply a compatible NVMe M.2 SSD in 2230, 2242 or 2280 form factor if you purchase the DIY version, and the drive length must match one of those three sizes. The enclosure draws power from the host, so no external adapter is required.

Aluminium enclosure and included cable

The aircraft-grade aluminium housing acts as a silent heat sink, keeping the internal SSD cool during sustained workloads without fan noise. A 40 Gb/s USB-C cable is bundled, ensuring the link between drive and host can handle the full USB4 bandwidth. The rugged metal shell protects the M.2 drive from physical shock during transport, while the DIY design lets you choose any supported NVMe capacity or upgrade later.