Our take
Seagate Expansion Portable STAX1000102 is a verified 1TB portable hard drive with USB 3.0, USB 2.0 backward compatibility, and a USB-bus-powered design. It suits ordinary attached storage when an outlet is inconvenient and a one-cable setup is useful. Treat the 1TB as nominal capacity, keep another copy of important files, and check the exact model and condition on any current offer: historical ASIN B005CTMS3G is not a verified present-day Amazon match.
A buyer who wants a straightforward 1TB portable HDD for attached storage and has a USB 3.0 or compatible USB 2.0 host; its documented bus-power design avoids a separate supply, but the current offer and actual cable should be checked..
A buyer who needs more than 1TB, a rugged or water-resistant enclosure, a measured high-speed result, current software support, or a confirmed present-day Amazon listing without checking the seller's actual model, condition, cable, and return terms.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- Seagate's regional model table maps the AMER 1TB Expansion Portable specifically to STAX1000102.
- The datasheet documents USB 3.0 and backward compatibility with a USB 2.0 host.
- Seagate and B&H describe USB-bus power with no external supply, useful when the drive travels between powered computers.
What to weigh up
- The old B&H exact-model page is marked no longer available there, and the historical ASIN does not prove a current Amazon offer.
- A USB 3.0 interface specification is not a measured file-copy speed; no benchmark is established.
- The current seller's cable, package, operating-system fit, individual-unit condition, and warranty eligibility are unknown.
Specifications and exact model details
The key details
| Model covered | STAX1000102 |
|---|---|
| Advertised capacity | 1TB nominal advertised capacity; manufacturer maps AMER 1TB to STAX1000102 |
| Drive configuration | Portable external HDD; USB-bus powered with no external power supply |
| Host connection | USB 3.0 with documented backward compatibility to USB 2.0 |
Performance figures are manufacturer claims. Source checked October 16, 2026. Regional models and included accessories can differ.
Full review: how the features affect your choice
What the features mean for you
Does the model number identify this 1TB version?
Seagate's regional model table separates several Expansion Portable capacities and regional suffixes. It maps the AMER 1TB configuration to STAX1000102, while 500GB, 750GB, and 1.5TB versions have different codes and other regions use different endings. The support page independently lists STAX1000102 as an Expansion Portable 1TB hard drive. That is a useful check against family-name-only listings, and it keeps this drive distinct from other Seagate 1TB Expansion models such as STEF1000100 or STEA1000400. The frozen source row carried ASIN B005CTMS3G, but that historical clue does not establish that a present seller is offering this exact code. Search by STAX1000102 and verify the model on the current page or label. ([Seagate Expansion Portable datasheet](https://www.seagate.com/files/staticfiles/docs/pdf/datasheet/disc/expansion-portable-usb3-datasheet-en-us.pdf), lines 73–86; [Seagate support page](https://www.seagate.com/support/external-hard-drives/portable-hard-drives/expansion-portable/), lines 330–341; checked 2026-10-16.)
How much does the 1TB capacity give you?
Seagate lists 1TB as a nominal capacity and notes that a computer may report less because operating systems can count bytes differently and formatting uses some space. The amount remaining for files depends on the host's format and the data you keep; this source does not promise a specific usable total. One terabyte can hold a substantial personal file collection or serve as a separate copy of a working set, but it is not unlimited room and it is still one physical drive. If the data matters, keep a second copy on a different device or service rather than treating this portable disk as the entire backup plan. Capacity alone also says nothing about the health of a used unit or how quickly it will finish a copy. ([Seagate Expansion Portable datasheet](https://www.seagate.com/files/staticfiles/docs/pdf/datasheet/disc/expansion-portable-usb3-datasheet-en-us.pdf), lines 5, 25–31 and 67–69; checked 2026-10-16.)
Will USB 3.0 or USB 2.0 fit your computer?
Seagate specifies USB 3.0 and says the drive is backward compatible with USB 2.0. That gives a documented path for an older USB 2.0 port as well as a USB 3.0 host. The interface generation describes the connection, not a guaranteed file-transfer rate for this hard drive. The saved sources do not verify a particular current laptop, hub, operating system, adapter, or cable, and the 2011 datasheet's Windows requirements are period documentation rather than proof of current support. Confirm the port on the computer and the cable supplied with the actual offer. No speed test or hands-on compatibility test is claimed here. ([Seagate Expansion Portable datasheet](https://www.seagate.com/files/staticfiles/docs/pdf/datasheet/disc/expansion-portable-usb3-datasheet-en-us.pdf), lines 4–14 and 58–60; [B&H exact-model page](https://www.bhphotovideo.com/c/product/848215-REG/Seagate_STAX1000102_1_TB_Expansion_Portable.html), lines 80–91; checked 2026-10-16.)
Does it need an outlet or separate power adapter?
The datasheet says the drive is powered through its USB cable and needs no external supply; B&H's exact-model page gives the same USB-powered description. That makes the design practical for a desk with limited outlets or for carrying files between compatible computers. It does not guarantee that every bus-powered hub or low-power port will run the actual drive reliably, and it does not establish that a present-day seller includes the right working lead. The 1TB datasheet describes a USB 3.0 cable in the original box, but an old package list is not evidence about a used or renewed unit. Check the seller's cable and test the drive before depending on it away from an outlet. ([Seagate Expansion Portable datasheet](https://www.seagate.com/files/staticfiles/docs/pdf/datasheet/disc/expansion-portable-usb3-datasheet-en-us.pdf), lines 8–10 and 59–64; [B&H exact-model page](https://www.bhphotovideo.com/c/product/848215-REG/Seagate_STAX1000102_1_TB_Expansion_Portable.html), lines 80–88 and 118–123; checked 2026-10-16.)
What do the setup and software claims mean today?
The 2011 Seagate sheet describes a plug-and-play setup and says no additional software is needed for its documented Windows workflow. It lists Windows 7, Vista, and XP in the period requirements section. Those old statements explain how the product was sold, but they do not establish current support for today's operating systems, current downloads, security updates, or every file system. Seagate's current support page provides product support resources, a manual, and a way to identify the exact model; it does not turn the dated system list into a present compatibility guarantee. If a particular computer or workflow is essential, check the current host and software information before purchase and test a noncritical file first. ([Seagate Expansion Portable datasheet](https://www.seagate.com/files/staticfiles/docs/pdf/datasheet/disc/expansion-portable-usb3-datasheet-en-us.pdf), lines 19–22 and 58–64; [Seagate support page](https://www.seagate.com/support/external-hard-drives/portable-hard-drives/expansion-portable/), lines 140–163; checked 2026-10-16.)
Who should choose it over another drive?
Choose this exact code when 1TB nominal capacity, a portable HDD, a USB 3.0 connection with a USB 2.0-compatible host path, and a no-separate-adapter design match the routine. Choose a larger-capacity model if your archive will exceed that space, and compare a product with explicit protection testing if the drive will face drops or weather; this Expansion model's cited evidence makes no ruggedness claim. It also is not the choice to make from an advertised interface alone when measured transfer speed matters. B&H marks its old STAX1000102 page no longer available there, and the historical Amazon ASIN remains unverified as a current exact offer. Use the tagged exact-model search, then check the seller's model, condition, cable, return terms, and warranty eligibility. Price, stock, and the health of an individual unit are not established. ([B&H exact-model page](https://www.bhphotovideo.com/c/product/848215-REG/Seagate_STAX1000102_1_TB_Expansion_Portable.html), lines 68–95 and 118–123; [Seagate support page](https://www.seagate.com/support/external-hard-drives/portable-hard-drives/expansion-portable/), lines 330–341; checked 2026-10-16.)
Compare for your needs
Find the external drive that fits you.
Tell us what matters. We’ll help you weigh the options.
Before you buy
Does historical ASIN B005CTMS3G prove a current STAX1000102 offer?
No. It is the frozen source row's historical ASIN. Use the tagged exact-model search and confirm STAX1000102 on the current offer or item label.
Can this drive connect to a USB 2.0 host?
Seagate says the USB 3.0 Expansion Portable is backward compatible with USB 2.0. Check the current host, port, and cable; this does not guarantee compatibility with every hub or computer.
Does it need a separate power adapter?
The manufacturer datasheet and B&H exact-model page describe USB-bus power and no external supply. That design does not prove that a particular host or hub will provide enough power.
Does USB 3.0 mean a specific copy speed?
No. It identifies the interface. The saved exact-model sources provide no measured read, write, or file-copy result.
Can I count on the original cable or warranty being included?
No. The old package documentation lists a USB cable and region-dependent limited warranty, but a present seller's contents, condition, and warranty eligibility need to be checked.
Where can I check the current price?
Use the Amazon link for current offers. Check the exact model, seller, product condition, delivery, and return terms. This page does not display a live price or confirm stock.
Sources and review basis
Sources & review basis
We use the linked product documentation for the features above. Our suitability notes and buying advice are editorial judgments based on those features, not measured performance results.
- Seagate Expansion Portable USB 3.0 datasheet, checked 2026-10-16. Lines 4–14 identify USB 3.0, USB power, USB 2.0 compatibility and one-cable setup; lines 58–64 give period software and original-box details; lines 73–79 map AMER 1TB to STAX1000102. Seagate support lists this exact 1TB model at lines 330–341. B&H exact-model page, checked 2026-10-16, lines 68–95 corroborates the model and marks its old listing no longer available. ↗ — checked October 16, 2026.
- Seagate Expansion Portable USB 3.0 datasheet, checked 2026-10-16. Lines 4–14 list USB 3.0, USB power, backward compatibility with USB 2.0, and single-cable setup; lines 58–64 list period requirements and original-box contents; lines 73–79 map AMER 1TB to STAX1000102. ↗ — checked October 16, 2026.
- Seagate Expansion Portable support page, checked 2026-10-16. Lines 330–341 identify STAX1000102 as a 1TB Expansion Portable hard drive and link the family datasheet and manual. ↗ — checked October 16, 2026.
- B&H exact-model listing, checked 2026-10-16. Lines 68–83 identify 1TB and MFR STAX1000102 and list USB 3.0, 5400rpm, USB power, and plug-and-play; lines 87–91 describe USB 2.0 compatibility and setup; line 95 says no longer available there; lines 118–123 list original-package contents and a period warranty. ↗ — checked October 16, 2026.
Is it the right fit?
Check the exact model and today’s offers on Amazon.