Western Digital WDBFTM0040BSL‑WESN 4TB USB‑C Portable External Hard Drive
Overview
The Western Digital WDBFTM0040BSL‑WESN is a 4 TB portable external hard drive in the WD My Passport Ultra™ series, designed for broad compatibility with USB‑C‑equipped desktops and laptops. It uses a USB 3.2 Gen 1 interface delivering transfers up to 5 Gb/s for high‑capacity storage tasks where bulk capacity is prioritized over SSD‑class speeds. Built into a sleek metal enclosure, the drive is suitable for daily transport and mobile backup workflows. Included WD software supports file management, scheduled backups, and optional password protection with built‑in 256‑bit AES encryption. The drive is USB‑C ready and includes a USB‑C to USB‑A adapter to ensure compatibility with legacy hosts. It targets data‑centric professionals, creatives, and IT teams needing reliable external storage expansion with simple plug‑and‑play connectivity.
Key Features
- 4 TB mechanical storage capacity
- USB‑C interface with USB 3.2 Gen 1 support
- Compact metal enclosure for portable use
- Includes USB‑C to USB‑A adapter
- Password protection with AES encryption support
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