Our take
The Maxtor OneTouch III 750GB is a powered desktop drive for a specific older connection setup. The exact model combines USB 2.0/1.1 with FireWire 400 and has a nominal capacity above the 500GB legacy drives in this comparison. The trade-off is its external power requirement and the gap between its period software and platform notes and current computer support. Consider it when you can identify the full model, use one of its documented ports, and verify the correct adapter. Do not choose it for portability or assume a current Amazon listing is the same configuration.
A buyer with a known legacy USB 2.0 or FireWire 400 workflow, an outlet, and a verified exact model and power supply.
Anyone who needs bus power, USB 3.0, Thunderbolt, confirmed present-day macOS or Windows support, or a tested current drive.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- Seagate's datasheet maps the 750GB capacity to both STM307504OTAB05-RK and T01G750.
- USB 2.0/1.1 and FireWire 400 are both documented for this configuration.
- The original package specification lists an external AC adapter and a FireWire 400 cable, which clarifies the intended desk setup.
What to weigh up
- It needs a separate power adapter; the historical package list does not prove a current seller includes the correct working adapter.
- Its host connections are USB 2.0/1.1 and FireWire 400, not USB 3.0 or Thunderbolt.
- Current host, operating-system and software support, current Amazon mapping, seller contents and individual-unit condition remain unknown.
Specifications and exact model details
The key details
| Model covered | STM307504OTAB05-RK / T01G750 |
|---|---|
| Advertised capacity | 750GB advertised capacity |
| Drive configuration | 3.5-inch ATA desktop HDD |
| Host connection | USB 2.0/1.1 and FireWire 400; external AC adapter |
Performance figures are manufacturer claims. Source checked October 14, 2026. Regional models and included accessories can differ.
Full review: how the features affect your choice
What the features mean for you
Check the complete code before comparing capacities
The 750GB model is STM307504OTAB05-RK / T01G750. The OneTouch III family also contains other capacities and interface variants, so a family name or old marketplace title is not enough to identify the drive on offer. Confirm the complete code on the label and the seller's stated capacity. The 750GB figure is nominal; formatting and existing data reduce available space. This gives the Maxtor a larger nominal ceiling than the 500GB FireWire drives and the 120GB WD Dual-option Combo in the saved comparison, but it remains a single-disk legacy configuration rather than a modern multi-drive library plan. Keep important files on another copy. ([Official datasheet](https://www.seagate.com/docs/maxtor/onetouch_iii_fw400-usb2.0_datasheet_EN.pdf), checked 2026-10-14.)
Choose between USB 2.0 and FireWire 400 by the host you actually have
The datasheet lists USB 2.0/1.1 and FireWire 400. That gives a buyer two documented connection choices, but it does not establish that a current computer, adapter or operating system will recognize this old drive. FireWire 400 is not FireWire 800, and the product is not documented here for USB 3.0 or Thunderbolt. Confirm the host port and cable path before buying. The datasheet includes source-era maximum transfer figures of 33 MB/s over USB 2.0 and 43 MB/s over FireWire 400; those are manufacturer ratings from the period document, not measurements of a present unit, host or workload. ([Official datasheet](https://www.seagate.com/docs/maxtor/onetouch_iii_fw400-usb2.0_datasheet_EN.pdf), checked 2026-10-14.)
Reserve an outlet and verify the adapter
The original package specification lists an external AC power adapter. This is a powered desktop drive, not a portable disk that draws its operating power from the host connection. That distinction rules it out when the drive must travel without an outlet. The datasheet gives a 3.2-pound weight and dimensions of 136 × 65 × 217 mm, which are useful desk-planning context but do not establish the state of a used enclosure. Before relying on a secondhand offer, verify the label and the correct adapter, and ask whether it is included and working. A historical package list is not a promise about today's seller. ([Official datasheet](https://www.seagate.com/docs/maxtor/onetouch_iii_fw400-usb2.0_datasheet_EN.pdf), checked 2026-10-14.)
Treat its backup and protection features as period software
The datasheet describes a OneTouch backup button, file synchronization, DriveLock password protection and Windows System Rollback. These explain the original product's intended backup workflow; they do not establish that the installers, services or current operating-system support are available today. The source does not justify calling DriveLock encryption. If a modern backup routine or a specific security property is a must-have, verify it independently on the exact unit and software version. A backup feature also does not replace a second copy of important files. ([Official datasheet](https://www.seagate.com/docs/maxtor/onetouch_iii_fw400-usb2.0_datasheet_EN.pdf), checked 2026-10-14.)
Keep the mechanism and interface figures in context
The exact model is specified as a 3.5-inch ATA HDD running at 7200 rpm with a 16 MB cache. These describe the mechanism, not a measured file-copy or application result on a current host. The datasheet's USB and FireWire maxima are period manufacturer claims, not a benchmark for this drive today. This evidence supports selecting the model for its capacity and legacy ports; it does not support a promise that it will feel fast, work with modern backup software, or outperform another drive in a current workload. ([Official datasheet](https://www.seagate.com/docs/maxtor/onetouch_iii_fw400-usb2.0_datasheet_EN.pdf), checked 2026-10-14.)
Verify the offer and intended workflow
Historical ASIN B000JFLAUA remains a source-row clue, not a verified current exact Amazon offer. Use the tagged exact-model search and compare the complete model code, capacity, seller condition, return terms, cable and power adapter. Confirm the computer's port, filesystem needs and operating-system path before placing important data on it. Current price, stock, warranty eligibility, seller package, compatibility and individual-unit health are not established here. ([Official datasheet](https://www.seagate.com/docs/maxtor/onetouch_iii_fw400-usb2.0_datasheet_EN.pdf), checked 2026-10-14.)
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 the 750GB model have FireWire?
The datasheet lists FireWire 400 and USB 2.0/1.1 for model STM307504OTAB05-RK / T01G750. FireWire 800 is not documented for it.
Can it run without a wall adapter?
The historical package specification lists an external AC adapter. Treat it as an outlet-powered desktop drive and confirm that the exact adapter is included and working.
Does the old datasheet prove compatibility with a current Mac or Windows PC?
No. Its Windows 2000/XP and Mac OS X 10.2.8-era requirements are historical. Current host and software support are unknown.
Is this the same as every Maxtor OneTouch III?
No. Check the complete model code. This profile is specifically for the 750GB FireWire 400/USB 2.0 model STM307504OTAB05-RK / T01G750.
Does historical ASIN B000JFLAUA identify the current Amazon offer?
That current mapping has not been verified. The affiliate link searches for the exact model and includes buyershortlists-20.
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.
- Official Maxtor OneTouch III FireWire 400 and USB 2.0 datasheet mapping 750GB to STM307504OTAB05-RK / T01G750 ↗ — checked October 14, 2026.
- Official Maxtor OneTouch III FireWire 400 and USB 2.0 datasheet reopened 2026-10-14; page 1 lines 1–15 and 59–67 describe period features, page 2 lines 84–90 list the historical package and adapter, lines 105–120 give dated host requirements, and lines 121–143 map 750GB to STM307504OTAB05-RK / T01G750 and list the drive and interfaces. ↗ — checked October 14, 2026.
Is it the right fit?
Check the exact model and today’s offers on Amazon.