# Corsair EX300U

- Source: https://stierproducts.com/products/corsair-ex300u
- Category board: https://stierproducts.com/categories/external-ssds
- Placement: #10 of 28 in External SSDs, C tier
- Brand: Corsair
- LP on this board: 428
- Last researched: 2026-09-10T01:10:11.397Z
- Method: https://stierproducts.com/methodology
- Dataset: https://doi.org/10.5281/zenodo.22062813 - every board at once, one dated snapshot per release, same licence, prices and photographs left out
- Reuse: Text, rankings, tier assignments, LP values and verdicts are free to quote and reuse with attribution to stierproducts and a link to the source URL (CC BY 4.0: https://creativecommons.org/licenses/by/4.0/). Product photographs are not covered: they belong to their respective owners and are reproduced to illustrate the product being reviewed. Do not redistribute them under this licence.

## Verdict

The consensus 10Gbps all-rounder, positively reviewed by both PCWorld and KitGuru. The sensible mainstream buy.

## For

- Good performer for a 10Gbps SSD
- Pocket-sized and portable
- Up to 1,100 MB/s claimed sequential performance
- Well-reviewed across the specialist press for everyday use
- Compact 10 Gbps drive

## Against

- Outpaced by the Kingston XS1000 on value at the same performance tier

## Evidence

Consolidated from 13 cited sources across 10 outlets

| Outlet | Said by | Stance | Link | Link status |
| --- | --- | --- | --- | --- |
| KitGuru | Simon Crisp | - | https://www.kitguru.net/components/ssd-drives/simon-crisp/corsair-ex300u-2tb-external-ssd-review/ | fetched and confirmed |
| Yahoo Tech | Jeff Dunn | B | https://tech.yahoo.com/computing/article/best-portable-ssds-130000835.html | fetched and confirmed |
| PCWorld | Jon L. Jacobi | B | https://www.pcworld.com/article/2918455/corsair-ex300u-ssd-review.html | fetched and confirmed |
| TechPowerUp | techpowerup.com | B | https://www.techpowerup.com/342176/corsair-announces-new-ex400u-survivor-usb4-and-ex300u-usb-external-ssds | fetched and confirmed |
| Instagram | - | B | https://www.instagram.com/p/DPwBgRsjKVu/ | fetched and confirmed |
| Profesional Review | José Antonio Castillo | B | https://www.profesionalreview.com/2025/10/08/corsair-ex300u-review/ | fetched and confirmed |
| Basic Tutorials | basic-tutorials.com | B | https://basic-tutorials.com/news/more-performance-on-the-go-corsair-introduces-new-rugged-ssds/ | fetched and confirmed |
| PCWorld | Jon Jacobi | B | http://www.pc-plus.biz/best-external-ssd-for-gaming.html | fetched and confirmed |
| PC-WELT | Jon L. Jacobi und Michael Söldner | B | https://www.pcwelt.de/article/2949647/corsair-ex300u-ssd-test.html | fetched and confirmed |
| KitGuru | - | B | https://www.kitguru.net/components/ssd-drives/simon-crisp/corsair-ex300u-2tb-external-ssd-review/all/1/ | fetched and confirmed |
| Threads | - | B | https://www.threads.com/@corsair/post/DPwBVUvCl-D/meet-the-corsair-ex300u-our-newest-magsafe-compatible-portable-ssd-perfect-for-m | fetched and confirmed |
| PCWorld | PCWorld | B | https://www.pcworld.com/article/406861/best-external-drives.html | fetched and confirmed |
| Tom’s Hardware | Charles Gouin-Peyrot | B | https://www.tomshardware.fr/test-corsair-ex300u-un-petit-ssd-portable-performant-et-compatible-magsafe/ | fetched and confirmed |

## Nearest alternatives on this board

| Rank | Product | Tier | Page |
| --- | --- | --- | --- |
| 5 | Crucial X10 Pro | A | https://stierproducts.com/products/crucial-x10-pro |
| 6 | Samsung T7 Shield | A | https://stierproducts.com/products/samsung-t7-shield |
| 7 | Adata SD810 | A | https://stierproducts.com/products/adata-sd810 |
| 8 | Kingston XS1000 | C | https://stierproducts.com/products/kingston-xs1000 |
| 9 | addlink P30 | C | https://stierproducts.com/products/addlink-p30 |
| 11 | OWC Envoy Pro Mini | C | https://stierproducts.com/products/owc-envoy-pro-mini |
| 12 | OWC Envoy Ultra | C | https://stierproducts.com/products/owc-envoy-ultra |
| 13 | Lexar SL500 | C | https://stierproducts.com/products/lexar-sl500 |
| 14 | Seagate Ultra Compact SSD | C | https://stierproducts.com/products/seagate-ultra-compact-ssd |
| 15 | SanDisk Extreme Portable V2 | C | https://stierproducts.com/products/sandisk-extreme-portable-v2 |

The full board is at https://stierproducts.com/categories/external-ssds.

## What this tier means

- C: Fair. Acceptable in the right situation, outclassed at its price.

## How to read this

- Each category is researched in four independent runs, one per lens (expert consensus, value, reliability, community pulse). Every run ranks a board of candidates that deliberately includes products buyers cross-shop but should avoid. Placements score on a ranked ladder (LP), and tiers are derived from LP, so no tier is ever assigned by hand.
- LP is this product's points on its own category ladder. It is comparable within a category and not across categories.
- Link status reports what our pre-publication link check found when it fetched the cited URL. It says nothing about the quality of the review.
- A citation with no usable link is listed rather than dropped, and is excluded from the counted total above.

## Image

https://stspimgdevmfyk46r5vwkay.blob.core.windows.net/images/products/corsair-ex300u.webp

Product photographs are not covered: they belong to their respective owners and are reproduced to illustrate the product being reviewed. Do not redistribute them under this licence.