Our take
Consider ST-3HCRS when a computer has USB-A and needs three more USB-A data ports plus access to either an SD or microSD card. Its main trade-offs are a single-card-at-a-time reader, unspecified current limits, and an unverified historic Amazon offer.
A computer with USB-A that needs three additional USB-A data connections and occasional access to either SD or microSD cards..
It is a poor fit for a USB-C-only host without an adapter, simultaneous SD and microSD use, display or network output, or a verified direct Amazon listing.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- B&H identifies the exact ST-3HCRS model and documents three USB-A 3.2 Gen 1 data ports.
- The hub includes SD and microSD reader slots for card transfers without a separate reader.
- The page calls the device bus powered, so no separate hub supply is listed.
What to weigh up
- The integrated host connector is USB-A, which does not directly suit a USB-C-only computer.
- B&H says only one card can be read at a time, and it does not provide reader speed details.
- The source does not state per-port power limits, and B01M3R9QG2 is not a verified current offer.
Specifications and exact model details
The key details
| Model covered | ST-3HCRS |
|---|---|
| Host connector | USB-A host connector |
| USB 3.x data ports | 3 USB-A USB 3.2 Gen 1 data ports up to 5Gbps |
| Installation | Cabled portable hub; no model-specific fit |
| Hub power | Bus-powered; separate supply not listed |
| Host charging | No host-charging passthrough 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
Expand a USB-A computer connection and read memory cards
ST-3HCRS combines three USB-A data ports with SD and microSD slots behind an integrated USB-A host connector. That mix can help a computer with USB-A when you want a few wired peripherals and a way to transfer files from cards without another adapter. The reviewed specification does not show USB-C host connectivity, video output, or Ethernet. Check the host connection carefully if the computer has only USB-C ports, and make sure an adapter would not interfere with the intended setup.
Treat 5Gbps as an interface maximum
B&H lists three USB 3.2 Gen 1 Type-A ports with data transfer up to 5Gbps. That is the interface ceiling in the specification, not a promise of measured speed for every attached drive or when several devices transfer at once. The page does not specify shared bandwidth allocation. For frequent storage transfers, compare the stated interface with the drive, host, and workflow; everyday peripherals such as a keyboard or mouse generally depend more on having the right connector count than on a peak-rate claim.
Choose it for one-card-at-a-time access
ST-3HCRS includes SD and microSD slots, but B&H says only one card can be read at a time. That restriction matters if you planned to copy directly between two cards through the hub. The source does not specify reader speed or card-standard support beyond the SD and microSD slot names. Verify the format and transfer requirements for a camera or computer workflow, and do not infer simultaneous access from seeing two openings on the chassis.
Plan around the bus-powered design
B&H lists the hub as bus powered, and the inspected specification does not describe a separate hub power supply. It gives no per-port current rating or total accessory-power budget. This makes it sensible to check device requirements before attaching equipment that draws significant power, such as portable storage or charging accessories. Three downstream data ports do not establish that each can supply a device at its maximum charging rate. Use a powered model if the connected equipment requires a published larger power budget.
Confirm the model on the current Amazon result
B&H identifies ST-3HCRS and its port functions, but the saved source check did not connect historical ASIN B01M3R9QG2 to a current Amazon offer. A separate importer record used a different ASIN and was not treated as a crosswalk. Use the tagged search and confirm the ST-3HCRS code, USB-A host, three data ports, and card slots on the selected result. This review relies on published specifications and makes no claim of personal testing, current price, stock, or customer-review summaries.
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Before you buy
Can both SD and microSD cards be read together?
No. B&H says only one card can be read at a time.
Is the host connector USB-C?
No. The page specifies an integrated USB-A host connector.
Is B01M3R9QG2 a verified current Amazon offer?
No. The saved check did not establish that exact listing mapping.
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.
- B&H exact-model ST-3HCRS product page ↗ — checked October 5, 2026.
- B&H exact model, three USB-A data ports, card slots, one-card-at-a-time rule, and bus-power details ↗ — checked October 5, 2026.
- Historical Amazon detail page was not readable; current offer not verified ↗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.