Lexar
Lexar SL660 Portable 2TB
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.
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Lexar
Model: LXES100-2TRNN
| Capacity | 2TB |
| Interface | USB 3.2 Gen 2 |
| Form Factor | External |
| Read Speed | 950 MB/s |
| Write Speed | 950 MB/s |
| Endurance (TBW) | 1,200 TB |
| Warranty | 3 Years |
The 2TB SL100 Pro in the same brushed-aluminum credit-card footprint of the 1TB. Famously pocketable but only marginally faster on sustained writes thanks to the larger SLC cache.
See how it stacks up against competitors in our Ultra-Portable SSDs SSD comparison, or browse related SSD buying guides.
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Reliable 2TB storage with 950 MB/s reads — the Lexar SL100 Pro Portable 2TB is a practical, affordable choice for daily backups and file transport.
At 950 MB/s reads and 950 MB/s writes, the Lexar SL100 Pro Portable 2TB 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.
2TB of storage provides generous headroom for everyday files. The compact, lightweight design slips into any bag pocket. 1,200 TBW endurance positions this as pro-grade — built for daily rewrite cycles without degradation. The 3-year warranty provides standard coverage for the expected lifespan of the drive.
At 2TB, 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.
This drive delivers SATA-class speeds over USB — adequate for documents, photos, and backups, but video editors should budget for a faster NVMe-based external.
SATA-based externals like the Lexar SL100 Pro Portable 2TB 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 Lexar SL100 Pro Portable 2TB is a solid all-around 2TB portable SSD for everyday use. If you need fast backups, reliable file transport between devices, or external storage for documents, photos, and media, the 950 MB/s reads deliver performance that makes daily tasks feel instant compared to an external hard drive.
At 2TB, 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 Lexar SL100 Pro Portable 2TB 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 950 MB/s performance without compatibility concerns.
On paper, the Lexar SL100 Pro Portable 2TB delivers 950 MB/s reads and 950 MB/s writes. In practice, a 50GB file — a typical 4K video project, a large game install, or a full photo shoot — transfers in ~53 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.
The Lexar SL100 Pro Portable 2TB is rated for 1,200 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 66 years to reach its endurance limit. For typical use patterns involving backups, file transfers, and game storage, the 1,200 TBW rating provides comfortable headroom well beyond the 3-year warranty period.
| Spec | Lexar SL100 Pro Portable 2TB | Samsung T7 Portable 2TB |
|---|---|---|
| Read Speed | 950 MB/s | 1,050 MB/s |
| Write Speed | 950 MB/s | 1,000 MB/s |
| Capacity | 2TB | 2TB |
| Interface | USB 3.2 Gen 2 | USB 3.2 Gen 2 |
| Endurance | 1,200 TBW | 1,200 TBW |
| Score | 7.6/10 | 9.4/10 |
The Samsung T7 Portable 2TB scores higher in our evaluation (9.4 vs 7.6/10). It also delivers faster reads (1,050 vs 950 MB/s).
For a detailed head-to-head comparison, see our full Lexar SL100 Pro Portable 2TB vs Samsung T7 Portable 2TB comparison.
| Model | Capacity | Interface | Read | Write | TBW |
|---|---|---|---|---|---|
| Lexar SL100 Pro Portable 2TB | 2TB | USB 3.2 Gen 2 | 950 | 950 | 1,200 |
| Samsung T7 Portable 2TB | 2TB | USB 3.2 Gen 2 | 1,050 | 1,000 | 1,200 |
| Samsung T7 Portable 4TB | 4TB | USB 3.2 Gen 2 | 1,050 | 1,000 | 2,400 |
| Samsung T7 Portable SSD | 1TB | USB 3.2 Gen 2 | 1,050 | 1,000 | 580 |
Specs shown for the closest Ultra-Portable SSDs alternatives. Full comparison table available on the compare page.
The Lexar SL100 Pro 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.
Lexar
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.
Lexar
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.
Lexar
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.