WD My Passport WDBPKJ0040BBK Portable Hard Drive 4TB
- Digital Storage Capacity: 4 TB
- HardDrive Size: 4 TB
- Hard Disk Interface: USB 2.0/3.0
- Hardware Connectivity: USB 2.0, USB 3.0, USB 3.2 Gen 2
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A sensible pick when the goal is inexpensive backup capacity with password protection, not speed.
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ASIN: B07VTW2LPXModel: WDBPKJ0040BBK-WESNCategory: External Hard Drives
Overview
A 4TB portable hard drive sized for carrying a full backup or media library. Bundled backup software adds ransomware defense, and the drive can be locked with a password plus hardware encryption, backed by a 3-year warranty.
This is a spinning-platter drive, not an SSD, so it trades top-end speed for a much lower cost per terabyte, which is the usual reason to pick it over a flash drive at this capacity. The same My Passport line runs up to 6TB, so 4TB sits in the middle of the range rather than at the top.
- 4TB portable capacity
- USB 3.1/USB 3.0 compatible
- Backup software with ransomware defense
- Password protection plus hardware encryption
Who it's for
Fits anyone who needs cheap bulk backup capacity for photos, video or documents and can live with mechanical-drive speeds. Less suited to people who want SSD-level transfer speed or plan to carry the drive daily in a bag.
Pros and cons
- Slim body despite the mechanical drive inside
- Large capacity at a low cost per terabyte
- Password lock backed by hardware encryption
- 3-year limited warranty included
- Mechanical drive, so slower and more shock sensitive than SSD
- Password protection requires installing the bundled software first
Performance notes
Being a mechanical drive, throughput is capped well below what an SSD delivers, though USB 3.1/3.0 keeps the interface from being the bottleneck. The included management software runs scheduled backups and watches for ransomware-style behavior, and the password lock pairs with hardware-level encryption rather than a software-only lock.
Specifications
| Brand | WD |
|---|---|
| Model | WDBPKJ0040BBK-WESN |
| Dimensions & fit | |
| HardDrive Size | 4 TBhigher than 72% of 30 external hard drives |
| Cache Memory Installed Size | 4 TB |
| Item Weight | 0.46 poundslower than 61% of 24 external hard drives |
| Item Dimensions L x W x Thickness | 4.2 × 3 × 0.7 inches |
| Capacity & performance | |
| Digital Storage Capacity | 4 TB |
| Hard Disk Rotational Speed | 1 rpmlower than 98% of 60 external hard drives |
| Construction & materials | |
| Enclosure Material | Aluminum Or Glass |
| Color | Black |
| Compatibility & installation | |
| Hard Disk Interface | USB 2.0/3.0 |
| Hardware Connectivity | USB 2.0, USB 3.0, USB 3.2 Gen 2 |
| Connectivity Technology | USB |
| Compatible Video Game Console Models | Microsoft Xbox One |
| Compatible Devices | Desktop, Laptop, Tablet |
| Installation Type | External Hard Drive |
| Included components | |
| Customer Package Type | Standard Packaging |
| Unit Count | 1 |
| Warranty & support | |
| Warranty Description | 3 years |
| Other details | |
| Form Factor | 2.5-inch |
| Hard Disk Form Factor | 2.5 inches |
| Hard Disk Description | Mechanical Hard Disk |
| Hardware Platform | PC |
| Data Transfer Rate | 1 Mbpslower than 95% of 21 external hard drives |
| Number of Items | 1 |
| Additional Features | Hardware Encryption, Portable |
| Mfr Part Number | WDBPKJ0040BBK-WESN |
| Specific Uses For Product | Business, Multimedia, Personal |
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Frequently asked questions
Does the WD My Passport 4TB need its own power supply?
No, it draws power over the USB connection, so there is no separate power adapter to carry.
Is the WD My Passport 4TB formatted for Mac?
It ships formatted for Windows use; Mac owners typically reformat it for Time Machine or cross-platform use.
Does it come with backup software installed?
Yes, WD's device management software is included and adds ransomware defense on top of scheduled backups.