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ADATA SV620H 256GB USB 3.0 External Solid State Drive (ASV620H-256GU3-CTI)
ADATA

ADATA SV620H 256GB USB 3.0 External Solid State Drive (ASV620H-256GU3-CTI)

Bottom line: The ADATA SV620H 256GB USB 3.0 External Solid State Drive ($89.50 on Amazon as of 2026-10-06): Up to 440MB/s read/write, about 4x faster than an external HDD; main trade-off: 256GB fills fast for large media; only a 512GB step-up offered.

$89.50

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Buy on Amazon — $89.50 Compare to similar ssds & storage

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For SSDs and PC storage upgrades, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ Up to 440MB/s read/write, about 4x faster than an external HDD
  • ✓ 3D NAND TLC flash for better reliability and power efficiency
  • ✓ Plug-and-play with Android, Mac OS, and Windows
  • ✓ Sandblasted titanium finish with raised, scratch-guarding edges

Cons

  • ✗ 256GB fills fast for large media; only a 512GB step-up offered
  • ✗ USB 3.1 Gen 1 ceiling, slower than Thunderbolt or NVMe externals
  • ✗ TLC NAND endures fewer write cycles than MLC under heavy loads
  • ✗ No hardware encryption listed for securing sensitive files

Manufacturer description

The ADATA sv620h external solid state drive delivers a totally new storage experience with an excellent cost-performance ratio. It uses new 3D NAND, or stacked TLC flash and features four times faster speeds compared to external hard drives, while being lighter, quieter, more shock resistant, and more durable. Its sandblasted Titanium finish creates a subtle, low profile look, and its raised edges protect surfaces from scratching. Available in 256GB and 512GB and compatible with Android, Mac OS and Windows, the sv620h allows users to share, transfer, and enjoy content with all the benefits…

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SpecPicks Verdict

SpecPicks scored ADATA SV620H 256GB USB 3.0 External Solid State Drive using a rating × review-volume × price-fit model applied to published specs and reviews across the ssds & storage category. ADATA's ssds & storage lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for ssds & storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • Upgrade to SSD today to enjoy lighter, quieter, and more durable operation
  • USB 3.1 Achieves up to 440MB/s read and write or four times faster than an average external Hard Drive
  • Incorporates 3D NAND Flash for increased reliability and better power efficiency compared to 2D NAND
  • Compatible with Android, Mac OS, and Windows
  • Capacities available in 256GB and 512GB

Full Specifications

BrandADATA
ColorSlim
Model NameSV620H
Read Speed440 Megabytes Per Second
Form FactorPortable
Media Speed440 megabits_per_second
ConnectivityUSB
Model NumberASV620H-256GU3-CTI
CompatibilityAndroid, Mac
Built-In MediaSV620H, USB 3.1 Cable, User Manual
Item Type NameADATA SV620H Portable Solid State Drive 3D NAND Flash 256GB USB 3.1 External SSD (ASV620H-256GU3-CTI)
Hard-Drive Size256 GB
Mfr Part NumberASV620H-256GU3-CTI
Number of Items1
Special FeatureShock Resistant, 3D NAND Flash, Lighter, Quieter, Durable, Faster Speeds
Hardware PlatformPC; Mac;Unix;Linux
Installation TypeExternal Hard Drive
Compatible DevicesPC, Mac, Unix, Linux
Data Transfer Rate440 Megabits Per Second
Additional FeaturesShock Resistant, 3D NAND Flash, Lighter, Quieter, Durable, Faster Speeds

Ready to buy?

ADATA SV620H 256GB USB 3.0 External Solid State Drive (ASV620H-256GU3-CTI) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $89.50

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

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ADATA SV620H 256GB USB 3.0 External Solid State Drive (ASV620H-256GU3-CTI)
$89.50
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