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Western Digital
Model: WDBKVX0460BBK
| Capacity | 4TB |
| Interface | USB 3.2 Gen 2 |
| Form Factor | External |
| Read Speed | 1,050 MB/s |
| Write Speed | 1,000 MB/s |
| Endurance (TBW) | 2,400 TB |
| Warranty | 3 Years |
The 4TB My Passport SSD has a niche-of-one — the only 4TB USB-C portable from WD in this form factor. A viable T7 4TB competitor on sale, but check price moves against the Samsung before committing.
See how it stacks up against competitors in our USB-C External SSDs SSD comparison, or browse related SSD buying guides.
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4TB of 1.1 GB/s storage for everyday use — the Western Digital WD My Passport SSD 4TB delivers reliable performance without the premium price tag.
With 1.1 GB/s reads and 1.0 GB/s writes over a USB-C connection, the WD My Passport SSD 4TB delivers reliable performance for daily computing needs. Backing up documents, transferring photos from a laptop to a desktop, or storing a media library — it handles routine tasks with consistent speed.
4TB of storage provides generous headroom for everyday files. The compact, lightweight design slips into any bag pocket. 2,400 TBW endurance positions this as pro-grade — built for daily rewrite cycles without degradation. Backed by a 3-year warranty, this drive offers typical protection for its class.
At 4TB, this drive hits a sweet spot for photo and video libraries. You can store thousands of RAW images or hours of 4K footage without juggling multiple drives.
SATA-based externals like the WD My Passport SSD 4TB are the sensible choice when NVMe speed is overkill — the 550 MB/s ceiling is plenty for system backups, media playback, and document storage, and the savings are significant.
The WD My Passport SSD 4TB targets users who need maximum throughput from an external drive. If you edit 4K or 6K video, move large project files between workstations, or work directly from external storage, the 1,050 MB/s read speed puts this drive in elite territory for a 4TB portable SSD.
At 4TB, this drive hits the sweet spot for users with substantial storage needs. Photo and video libraries, game collections, and professional project files all benefit from the headroom — you will not be juggling free space or swapping files between drives.
The USB 3.2 Gen 2 interface means the WD My Passport SSD 4TB hits full speed on virtually any modern USB-C or USB-A port — no special hardware required. Plug it into a laptop, desktop, game console, or tablet and you get the same 1,050 MB/s performance without compatibility concerns.
On paper, the WD My Passport SSD 4TB delivers 1,050 MB/s reads and 1,000 MB/s writes. In practice, a 50GB file — a typical 4K video project, a large game install, or a full photo shoot — transfers in ~50 seconds. A 100GB batch of raw files moves in ~2 minutes. For users who regularly shuttle large files, these transfer times are a meaningful productivity improvement over slower SATA-based externals that take 3-5x longer for the same tasks. Note: those numbers describe large sequential transfers — everyday tasks (opening documents, app launches, game loads) feel equally fast across all NVMe portables because random 4K performance is similar drive-to-drive.
At 1,050 MB/s, thermal throttling is minimal during typical use. Only sustained sequential writes exceeding 100GB — such as backing up an entire media library in one pass — may cause the controller to reduce speeds temporarily. For everyday transfers and backups, you will consistently see performance near the rated specifications.
The WD My Passport SSD 4TB is rated for 2,400 TBW (terabytes written) endurance. To put that in perspective: if you write 50GB per day — an aggressive daily workload for most users — the drive would take approximately 132 years to reach its endurance limit. For typical use patterns involving backups, file transfers, and game storage, the 2,400 TBW rating provides comfortable headroom well beyond the 3-year warranty period.
| Spec | WD My Passport SSD 4TB | Samsung T9 2TB |
|---|---|---|
| Read Speed | 1,050 MB/s | 2,000 MB/s |
| Write Speed | 1,000 MB/s | 2,000 MB/s |
| Capacity | 4TB | 2TB |
| Interface | USB 3.2 Gen 2 | USB 3.2 Gen 2x2 |
| Endurance | 2,400 TBW | 1,200 TBW |
| Score | 8.6/10 | 9.6/10 |
The Samsung T9 2TB scores higher in our evaluation (9.6 vs 8.6/10). It also delivers faster reads (2,000 vs 1,050 MB/s).
For a detailed head-to-head comparison, see our full WD My Passport SSD 4TB vs Samsung T9 2TB comparison.
| Model | Capacity | Interface | Read | Write | TBW |
|---|---|---|---|---|---|
| WD My Passport SSD 4TB | 4TB | USB 3.2 Gen 2 | 1,050 | 1,000 | 2,400 |
| Samsung T9 2TB | 2TB | USB 3.2 Gen 2x2 | 2,000 | 2,000 | 1,200 |
| Samsung T9 Portable SSD | 1TB | USB 3.2 Gen 2x2 | 2,000 | 1,950 | 600 |
| Crucial X10 Pro 2TB | 2TB | USB 3.2 Gen 2x2 | 2,000 | 2,000 | 1,200 |
Specs shown for the closest USB-C External SSDs alternatives. Full comparison table available on the compare page.
The WD My Passport SSD comes in multiple capacities. Smaller sizes save money if you do not need the headroom; larger sizes drop the cost-per-TB for media libraries and Time Machine backups.
Western Digital
Price as of Aug 3, 2026, 6:33 PM. Prices and availability are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.
Western Digital
Price as of Aug 3, 2026, 6:33 PM. Prices and availability are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.
Western Digital
Price as of Aug 3, 2026, 6:33 PM. Prices and availability are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.
Western Digital
Price as of Jul 3, 2026, 4:11 AM. Prices and availability are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.