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Compact square black portable SSD with micro B port and cable

SanDisk

SanDisk WDBAYN0020BBK-WESN 2TB portable SSD

SKU CH-ATV2-D9Y55 MPN WDBAYN0020BBK-WESN

A 2 TB portable SSD with USB 3.0 micro B interface, read speeds up to 400 MB/s and drop resistance up to 2 metres

  • Total capacity2 TB
  • Interface typeUSB 3.0 micro B
  • Setup requirementsWindows 10 macOS Big Sur, Catalina, Mojave Formatted exFAT f
  • Operating temperature range0 °C to 45 °C
  • Storage temperature range-20 °C to 85 °C
  • Product depth2.54 in (6.45 cm)
  • Fast file transfers with read speeds up to 400MB/s
  • Compact 2.54" square design fits in any pocket
  • Drop resistant up to 2 meters for everyday durability
  • Ready to use with plug-and-play exFAT formatting
  • Works with Windows 10 and macOS Big Sur, Catalina, Mojave

2TB Portable SSD with USB 3.0 micro B

The SanDisk WDBAYN0020BBK-WESN is a 2TB external SSD built for users who need fast, portable storage. It delivers read speeds up to 400MB/s to move large files quickly. A compact, drop-resistant design rated to 2 metres suits mobile workflows. Plug-and-play operation works immediately on Windows and macOS.

Check OS version and port type before ordering

The drive is formatted exFAT for Windows 10 and macOS Big Sur, Catalina or Mojave. Reformatting may be required for other operating systems. Your device must provide a USB 3.0 micro B connection for the included cable. Operating temperature range is 0°C to 45°C.

Fits laptop bags and desktop setups without crowding

At 2.54" by 2.54" by 0.34" and 0.06 lb, the drive adds negligible bulk to a carry case. It draws power from the host USB port, so no external adapter is needed. The small footprint leaves desk space free for other peripherals. Package includes the SSD, a USB 3.0 cable and documentation.

How it compares

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

Price $230.99
Pricier than about 58% of the 410 comparable items (median $202.99).
Total capacity 2 TB
Higher than about 60% of the 311 comparable items (median 1 TB).
Price per TB $115.50 per TB
Cheaper than about 66% of the 310 comparable items (median $142.00 per TB).

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Specifications

Product
Brand nameWestern Digital
Product lineElements SE
Model nameWDBAYN0020BBK-WESN
Total capacity2 TB
Ports & slots
Interface typeUSB 3.0 micro B
Size & build
Overall width2.54 in (6.45 cm)
Product depth2.54 in (6.45 cm)
Overall height0.34 in (0.86 cm)
Product weight0.06 lb (0.03 kg)
Shipping weight0.20 kg
Package size178 × 127 × 32 mm
In the box
Included itemsPortable SSD
USB 3.0 Cable
Safety and Warranty Guide
Environment & compliance
Operating temperature range0 °C to 45 °C
Storage temperature range-20 °C to 85 °C

Questions about this item

Does the box include the cable I need to connect the USB 3.0 micro B port to my computer?

Yes, the package contains the portable SSD and a USB 3.0 cable, so you can plug it in straight away without buying anything extra.

The specs list only a 2TB capacity — is that the only size available for this WDBAYN0020BBK-WESN model?

This specific model number is the 2TB version; other capacities carry different model numbers, so choose this one if you need 2TB of storage.

What does the 400MB/s read speed actually mean when I copy files to my laptop?

The 400MB/s figure is the maximum sequential read speed, so large files such as videos or backups will transfer noticeably faster than on a mechanical drive, though real-world speeds vary with file size and system.

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