Lexar E300 is a compact M.2 NVMe SSD enclosure that turns an internal M.2 drive into a fast, portable USB storage device.

Core specs and performance

• Interface: USB 3.2 Gen 2 (10Gbps), giving up to about 10Gbps theoretical transfer speed (up to roughly 1,000–1,050 MB/s in real use with a good NVMe SSD).

• SSD support: M.2 PCIe NVMe only, compatible with M Key and B&M Key drives in sizes 2230 / 2242 / 2260 / 2280, up to 4TB capacity.

• Not designed for SATA M.2 SSDs (only NVMe protocol is supported).​

Design, cooling, and durability

• Material: aluminum alloy shell with an internal heat dissipation sticker to help keep the SSD cool during heavy transfers.

• Portable features: lanyard hole and rugged bumper for extra protection against bumps when carried around.

• Size & weight: about 115 × 38 × 12 mm, 67 g, so it’s slim and pocket‑friendly.

Usage and suitability

• Type: SSD enclosure / case (single M.2 NVMe slot).​

• Installation: tool‑free, plug‑and‑play, so you can open it, insert the SSD, and start using it without drivers on modern systems.

• Operating temperature: 0°C to 70°C, storage from −25°C to 85°C, which is fine for typical home/office and mobile use.​

If you tell me which NVMe SSD (model and capacity) and what port your device has (USB‑C 10Gbps, USB‑C 5Gbps, or USB‑A), I can estimate the kind of real‑world speeds you’re likely to see with this enclosure.