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Seagate One Touch Portable SSD

Seagate One Touch Portable SSD

By Seagate · External Ssds · Desk & Streaming Setup

  • 500 GB capacity
  • Up to 1030 MB/s read speed
  • USB-C connectivity
  • 3-year limited warranty

Price not listed

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Used, refurbished, open-box

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Problems, parts and running costs

Summary

A 2019 USB 3.0 (5 Gbps) portable SSD sold under the Seagate One Touch name: 500 GB, rated up to 400 MB/s, bus-powered over a Micro-B cable. Check the exact model printed on the drive before buying, because the same name also covers the faster 2021 USB-C STKG version and listings mix the two.

Strengths

  • Genuinely tiny and light: about 75 x 55.5 x 10 mm and 65 g.
  • 400 MB/s-rated USB 3.0 is far quicker than a spinning portable hard drive.
  • Bus-powered over USB-A; works without installing Seagate’s optional Toolkit.
  • Toolkit Sync Plus offers continuous folder sync with an optional deletion archive.
  • Three-year limited hardware warranty with an official Seagate support page.

Weaknesses

  • The STJE500400 is a 2019 drive; newer USB-C models offer more speed and capacity.
  • Only 500 GB, and no native USB-C socket on the drive.
  • The included 20 cm Micro-B cable is short and the wide Micro-B plug is awkward.
  • Sync Plus is not a versioned or system-image backup and can propagate deletions.
  • No IP rating, drop rating or rugged certification is published.
  • No user-replaceable internal parts; a failed unit is replaced as a whole.

Verified specifications

Capacity500 GB decimal (about 465.7 GiB before file-system reservations).
InterfaceUSB 3.0 / USB 3.1 Gen 1, 5 Gbps, bus-powered.
ConnectorUSB 3.0 Micro-B on the drive to USB Type-A on the host; 20 cm (about 7.9 in) cable included. No built-in USB-C receptacle.
Manufacturer peak speedup to 400 MB/s.
Dimensions75 x 55.5 x 10 mm (about 2.95 x 2.19 x 0.39 in).
Weight65 g (0.143 lb).
File systemexFAT from the factory.
CompatibilityWindows 7 or later, Mac OS X 10.12 or later (per Seagate’s 2019 sheet).
SoftwareSeagate Toolkit / Sync Plus (downloadable).
Warrantythree-year limited hardware warranty at original sale.
In the boxdrive, 20 cm USB 3.0 Micro-B-to-A cable, quick start guide, software download.
Full research notes and sources

Which model this is

This page covers the 2019 first-generation Seagate One Touch SSD, model STJE500400 (black, 500 GB). Related variants are STJE500402 (white, 500 GB), STJE1000400 (black, 1 TB) and STJE1000402 (white, 1 TB). The 2021 successor STKG500400 is a different drive: 1030 MB/s over USB 3.2 Gen 2 with a USB-C connector. Seagate keeps separate STJE and STKG support listings, and listings under the same “One Touch” name mix the two. Check the printed model on the drive and the connector before buying.

Speed and real-world performance

Seagate rates the STJE500400 at up to 400 MB/s. Those results come from a different capacity with a different cache state, so they are a guide, not a promise for a 500 GB unit. Real speed also depends on the host USB controller, file sizes, destination drive, cache state, available flash space and capacity. Backward compatibility with USB 2.0 reduces speed; a USB 2.0 cable will not deliver 400 MB/s.

Buying in 2026

Best Buy and B&H mark the STJE500400 unavailable. Checked October 27, 2026, surviving US listings include about $71 in stock at a smaller IT merchant and $109.99 from a third-party Walmart Business seller, plus inactive catalog prices at $79.99. A Walmart consumer page showed $64.72 but out of stock. Newer 1 TB USB-C models can be better value, though specific offers sometimes show out of stock: Samsung T7 1 TB was advertised at $98.99 but not available for delivery, and Crucial X9 1 TB was posted at $119.99 at Best Buy but unavailable, or $159.99 in-store-only at Micro Center. The 2021 successor STKG500400 (1030 MB/s, USB-C) is also marked no longer available at B&H, and no verified attractive current US retail checkout offer was found.

At $70 or more for new old stock, this 2019 drive is poor value next to modern 1 TB USB-C options, though those specific offers may be out of stock. Under $25 delivered for a known-good used unit with a full read/write test is defensible as cheap temporary storage; $25 to $40 is conditional. Above $50, there is little reason to pick this drive over researching modern options.

Running costs and ownership

No fixed annual parts, subscription, filter, battery or maintenance fee is documented. USB bus power is used only when connected. A hypothetical electricity scenario: 2 W at the USB port for 500 connected hours per year is 1 kWh per year, or about $0.20 per year at $0.20 per kWh. Those figures are illustrative, not measured on this drive; no verified wattage log exists. The real cost exposure is data loss: the three-year warranty covers hardware, not data, and professional recovery can exceed the purchase price. Seagate does not sell spare internal parts; an out-of-warranty failed unit is replaced as a whole. Seagate Toolkit Sync Plus is free to download, but its two-way sync can propagate deletions, so it is not a substitute for an independent backup.

Is it worth it?

At $70 or more for new old stock, this 2019 drive is poor value next to modern 1 TB USB-C options. Under $25 delivered for a known-good used unit with a full read/write test is defensible as cheap temporary storage; $25 to $40 is conditional. Above $50, there is little reason to pick this drive over researching modern options. Buyers wanting native USB-C, about 1 GB/s transfers, guaranteed in-warranty new stock or a single irreplaceable copy of important files should look elsewhere.

Sources

Manufacturer:

Independent reviews:

Owner reports:

Parts and stores:

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