Our take
Choose F4U021bt for a small set of basic peripherals when four USB 2.0 ports and a travel-oriented body are enough. Its central tradeoff is a slow interface ceiling and an unverified computer-side plug and historical listing match.
A traveler needing a few basic USB-A peripherals and willing to verify the host connector and exact model on the current offer..
It is not the right pick for fast recurring file transfers, known high-current loads, a USB-C-only host without a verified adapter, or any setup that requires HDMI, network or card-reader ports.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- Belkin identifies the F4U021bt model and four USB 2.0 downstream ports.
- A reseller lists integrated cable storage and an up-to-480Mbps interface rate.
- No external power brick is listed for a simple travel kit.
What to weigh up
- USB 2.0 is slower than USB 3.x for frequent large transfers.
- The host plug, lead length and current budget are not documented in the saved record.
- The frozen Amazon ASIN is not mapped to Belkin's model.
Specifications and exact model details
The key details
| Model covered | F4U021bt |
|---|---|
| Host connector | Host connector not confirmed for the exact retail package |
| USB 3.x data ports | Four dedicated USB 2.0 downstream ports; no USB 3.x ports listed |
| Installation | Compact travel design with integrated cable storage; lead length is unknown |
| Hub power | No external power supply listed; current budget unknown |
| Host charging | No host-charging pass-through documented |
Performance figures are manufacturer claims. Source checked October 5, 2026. Regional models and included accessories can differ.
Full review: how the features affect your choice
What the features mean for you
A simple four-port hub for basic USB-A expansion
F4U021bt is a straightforward travel hub: Belkin identifies four USB 2.0 downstream ports, and its page positions the device for adding everyday connections to a laptop. That is a useful distinction for someone who primarily wants a keyboard, mouse, flash drive or similar peripheral. This is not a multi-display dock, a card reader or a high-speed USB 3.x hub. Its value depends on needing a few basic ports in a compact travel format and not requiring more advanced connections.
USB 2.0 defines the speed ceiling
Belkin describes the connectors as Hi-Speed USB 2.0; LDLC gives a maximum interface rate of 480Mbps. That is a theoretical interface rate, not a measured copy speed, and the source does not state a total shared bandwidth when multiple devices are connected. It is suitable to consider for low-demand peripherals and occasional files, but users moving large video archives or using fast external storage should compare a USB 3.x hub instead. The exact offer should retain the F4U021bt model label so it is not confused with newer Belkin hubs.
Cable storage supports the travel-oriented design
The LDLC product description lists integrated cable storage and describes the model as compact and intended to travel. This can help keep a short hub lead together with the body when packing. The sources do not document cable length, dimensions or a special strain-relief design, so evaluate the physical fit from the current seller photos if your laptop ports are crowded or you need a longer reach. The bundled cable-management feature does not change the USB 2.0 interface limit.
Plan around bus power and ordinary peripherals
LDLC's specification table says there is no external power supply. That keeps the kit simple, but it also means this review cannot recommend it for a group of high-draw devices based on the evidence available. The source gives no total current budget or per-port power rating. For a keyboard, mouse and light storage use, check the connected-device requirements; for multiple portable hard drives or charging phones, choose a documented powered hub instead. This assessment follows the published spec and does not infer a safe simultaneous load.
Check the exact model before using the Amazon search
Belkin's official page gives the model code, while the historical B09PF6SQZ5 offer could not be mapped to it. Search for F4U021bt and compare the product name, four-port layout and white/black travel design before selecting an offer. The source page lists older compatibility examples, so owners of a modern USB-C-only laptop will also need a suitable host connection; this packet does not claim that the included hub provides USB-C. There is no hands-on claim or review consensus in this profile.
Decide whether a basic travel hub fits the host and transfer need
Four USB 2.0 ports are most useful when the goal is to consolidate a few everyday USB-A connections while travelling. The 480Mbps figure is the interface ceiling; it does not make F4U021bt equivalent to a USB 3.x hub for frequent large transfers. Cable storage supports packing the hub as a small kit, but the sources do not settle the host plug, lead length or current budget. Check the current product photographs and connector details against the laptop before ordering, and choose a faster or externally powered model if your planned devices need higher throughput or a documented power reserve.
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Before you buy
How many downstream ports are documented?
Belkin identifies four USB 2.0 ports.
Are the ports USB 3.0?
No. The saved sources identify USB 2.0.
Is B09PF6SQZ5 confirmed as F4U021bt?
No. Use the model search and compare the current offer.
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.
- Belkin F4U021bt manufacturer model page ↗ — checked October 5, 2026.
- Belkin SKU F4U021bt and four Hi-Speed USB 2.0 ports ↗ — checked October 5, 2026.
- LDLC model details, cable storage, 480Mbps claim and no external supply ↗ — checked October 5, 2026.
- Historical Amazon listing; cache miss, so exact SKU association remains unverified ↗Paid link · We may earn a commission. — checked October 5, 2026.
Is it the right fit?
Check the exact model and today’s offers on Amazon.