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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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Reliable 4TB storage with 1.1 GB/s reads — the WD My Passport SSD 4TB is a practical, affordable choice for daily backups and file transport.
At 1.1 GB/s reads and 1.0 GB/s writes, the WD My Passport SSD 4TB is not trying to set speed records — it is trying to be the drive you reach for every day. And it succeeds: fast enough for backups and file transfers, cheap enough to buy without thinking twice.
4TB of storage provides generous headroom for everyday files. The compact, lightweight design slips into any bag pocket. With 2,400 TBW, this is pro-grade endurance designed for sustained professional workloads. 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.
In the speed hierarchy, the WD My Passport SSD 4TB sits above HDDs and below NVMe. Think of it as a SATA SSD in your pocket — fast enough for 95% of daily tasks at a fraction of the cost of the fastest USB drives.
The WD My Passport SSD 4TB is a solid all-around 4TB portable SSD for everyday use. If you need fast backups, reliable file transport between devices, or external storage for documents, photos, and media, the 1,050 MB/s reads deliver performance that makes daily tasks feel instant compared to an external hard drive.
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.
Sequential read and write speeds — the numbers manufacturers advertise — matter most when transferring single large files. For everyday tasks like opening documents, browsing photos, running applications from the drive, or loading games, random 4K performance is more relevant. All NVMe-based external SSDs deliver random IOPS in the same general range, so the $WD My Passport SSD 4TB feels similarly responsive to other fast portables for daily use. The real differentiator shows up during large file transfers, where the $1,050 MB/s read speed pulls noticeably ahead of slower SATA-based externals.
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.