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Seagate
Model: STKS5000400
| Capacity | 500GB |
| Interface | USB 3.2 Gen 2 |
| Form Factor | External |
| Read Speed | 1,030 MB/s |
| Write Speed | 1,030 MB/s |
| Endurance (TBW) | 300 TB |
| Warranty | 3 Years |
The 500GB One Touch is Seagate's entry-level portable SSD — typically the cheapest brand-name 1050-class Gen 2 drive at retail. Speeds are real-world faster than rated for short transfers; the catch is that the SLC cache is tiny.
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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Everyday external storage done right: 500GB capacity, 1.0 GB/s reads, and the reliability you expect from Seagate.
1.0 GB/s reads and 1.0 GB/s writes cover everything a typical user needs: Time Machine backups, document archives, photo libraries, and game installs. The Seagate One Touch SSD 500GB is the drive you plug in and forget about — it just works.
500GB of storage provides generous headroom for everyday files. The compact, lightweight design slips into any bag pocket. Rated at 300 TBW, this drive handles typical daily workloads comfortably. The 3-year warranty provides standard coverage for the expected lifespan of the drive.
This speed range is typical of a SATA SSD running over USB — noticeably faster than any HDD, but well below what NVMe drives achieve over Gen 2x2 or Thunderbolt.
This drive performs like a SATA SSD over USB — roughly 5-6× faster than an external HDD for random reads, but not in the same league as NVMe-based externals. For documents, photos, and backups, the difference is academic.
The Seagate One Touch SSD 500GB is a solid all-around 500GB portable SSD for everyday use. If you need fast backups, reliable file transport between devices, or external storage for documents, photos, and media, the 1,030 MB/s reads deliver performance that makes daily tasks feel instant compared to an external hard drive.
At 500GB, this drive works best as a secondary transport drive or backup destination rather than a primary storage solution. It holds a focused working set of files — a project folder, a photo shoot, or a selection of games — without the bulk of higher-capacity alternatives.
The USB 3.2 Gen 2 interface means the Seagate One Touch SSD 500GB 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 1,030 MB/s performance without compatibility concerns.
On paper, the Seagate One Touch SSD 500GB delivers 1,030 MB/s reads and 1,030 MB/s writes. In practice, a 50GB file — a typical 4K video project, a large game install, or a full photo shoot — transfers in ~49 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 $Seagate One Touch SSD 500GB feels similarly responsive to other fast portables for daily use. The real differentiator shows up during large file transfers, where the $1,030 MB/s read speed pulls noticeably ahead of slower SATA-based externals.
The $Seagate One Touch SSD 500GB is rated for $300 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 $16 years to reach its endurance limit. For typical use patterns involving backups, file transfers, and game storage, the $300 TBW rating provides comfortable headroom well beyond the $3-year warranty period.
| Spec | Seagate One Touch SSD 500GB | Samsung T9 2TB |
|---|---|---|
| Read Speed | 1,030 MB/s | 2,000 MB/s |
| Write Speed | 1,030 MB/s | 2,000 MB/s |
| Capacity | 500GB | 2TB |
| Interface | USB 3.2 Gen 2 | USB 3.2 Gen 2x2 |
| Endurance | 300 TBW | 1,200 TBW |
| Score | 7.6/10 | 9.6/10 |
The Samsung T9 2TB scores higher in our evaluation (9.6 vs 7.6/10). It also delivers faster reads (2,000 vs 1,030 MB/s).
For a detailed head-to-head comparison, see our full Seagate One Touch SSD 500GB vs Samsung T9 2TB comparison.
| Model | Capacity | Interface | Read | Write | TBW |
|---|---|---|---|---|---|
| Seagate One Touch SSD 500GB | 500GB | USB 3.2 Gen 2 | 1,030 | 1,030 | 300 |
| 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 Seagate One Touch 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.
Seagate
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.
Seagate
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.
Seagate
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.
Seagate
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.