Our take
GTMax 257412 / 4PMH is a basic four-port USB 2.0 option for lower-bandwidth peripherals. It should not be chosen for modern high-speed storage without checking the connector, power needs and current operating-system support.
A low-bandwidth peripheral setup that needs four legacy USB connections, when the buyer can confirm connector fit and current computer compatibility..
Skip it for USB 3.x file transfer, a documented powered-hub input, high-draw external disks, current-version compatibility guarantees or a verified match to B002FFT8Z6.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- Two item records associate GTMax 257412 and part 4PMH with this four-port layout.
- Four USB 2.0 ports and a 480Mbps interface ceiling are identified.
- A reseller describes bus-powered, plug-and-play use.
What to weigh up
- The USB 2.0 ceiling is modest for high-speed storage.
- The operating-system lists disagree and do not establish current versions.
- Host shape, external-power capability and the current Amazon offer remain unverified.
Specifications and exact model details
The key details
| Model covered | 257412 / 4PMH |
|---|---|
| Host connector | Host connector shape not confirmed |
| USB 3.x data ports | Four USB 2.0 data ports; no USB 3.x ports documented |
| Installation | Black four-port hub; host plug and cable layout unclear |
| Hub power | Bus-powered claim; separate hub input not verified |
| Host charging | No host charging function documented |
Performance figures are manufacturer claims. Source checked October 4, 2026. Regional models and included accessories can differ.
Full review: how the features affect your choice
What the features mean for you
A basic four-way split at USB 2.0 speed
GTMax's 257412 / 4PMH item record describes a straightforward four-port USB 2.0 hub. The 480Mbps number is the USB 2.0 interface maximum, not a promise that four connected devices can each transfer at that rate at the same time. This generation is appropriate to assess for ordinary low-bandwidth peripherals where added connectors matter more than fast bulk file transfer. It is not a source-supported substitute for a modern USB 3.x hub when moving large files to storage. The record provides the model and port count, but the Amazon listing could not be opened to verify the current offer; compare the exact model and black four-port appearance when using the search link.
Check what power the attached devices need
TecnoGO's product description calls the hub bus-powered, meaning it is described as taking power through its host USB connection. The available record does not document a separate adapter, voltage or current limit, so do not assume it can reliably power high-draw external drives or several charging devices. A keyboard, mouse or low-power receiver presents a different demand from a bus-powered spinning disk. The current item image should also be checked for any optional socket not reflected in the text. No load test or evidence about all four ports being occupied together is available, so this review does not claim a particular number of stable simultaneous peripherals.
Expect USB 2.0 rather than a current high-speed data path
The product's USB 2.0 interface and 480Mbps ceiling are confirmed in the two indexed retailer records. Actual file copying can be slower and depends on the computer, hub controller, cable and connected storage. A USB 3.x drive can still connect physically through a compatible USB 2.0 port, but it will not use its higher-speed interface through this hub. Buyers prioritizing backup speed, external SSD use or frequent movement of large video files should compare a higher-generation hub. The source does not document whether the 4PMH's four ports share a dedicated controller or any measured speed, so the nominal figure should not be treated as an observed result.
Confirm operating-system support for the current computer
The TecnoGO record describes plug-and-play support for Windows, macOS and Linux. The Desertcart specification field lists Mac OS and older Windows editions, omitting current versions and Linux. Those descriptions broadly point to a simple standard USB hub but do not provide a manufacturer compatibility statement for current operating systems. Most importantly, neither record gives a driver download, chipset identifier or supported-version table for the exact current package. A buyer using a specialized or managed system should confirm the operating system and policy requirements before ordering. Do not treat “plug and play” on a reseller page as a guarantee of compatibility with every host.
Match the product code before choosing an offer
The number 257412 and part 4PMH distinguish this four-port USB 2.0 product from GTMax hubs with other layouts. Two reseller records associate those identifiers with B002FFT8Z6, but Amazon's page did not return usable listing information. A tagged exact-model search helps avoid a direct-link claim that the historic ASIN is still the same offer. Compare the selected page for a four-port USB 2.0 layout, model 257412 or part 4PMH, and the black variant if color matters. No power-surge protection, durability, cable length, current price, stock or sale status is asserted; those details were not established in the sources used for this packet.
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Before you buy
What model and part should I search?
The indexed records identify GTMax 257412 and part 4PMH.
Is this a USB 3.0 hub?
No; the records identify it as a four-port USB 2.0 hub.
Is 480Mbps guaranteed per port?
No; it is the interface ceiling, and simultaneous per-port performance is unknown.
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.
- Desertcart and TecnoGO GTMax 257412 / 4PMH retailer records ↗ — checked October 4, 2026.
- Desertcart indexed item fields: GTMax brand/model/part, black variant, four-port count, USB 2.0 and 480Mbps; direct fetch cache miss ↗ — checked October 4, 2026.
- TecnoGO specification record: 4PMH, four USB 2.0 ports, 480Mbps, bus-powered/plug-and-play and operating-system list; direct fetch cache miss ↗ — checked October 4, 2026.
- Historical Amazon ASIN returned a cache miss; current offer not verified ↗Paid link · We may earn a commission. — checked October 4, 2026.
Is it the right fit?
Check the exact model and today’s offers on Amazon.