Our take
The Yottamaster GA1-2A2C-G2 is a documented four-port data hub for a mix of USB-A and USB-C devices. Its manual's 10Gbps figure is an interface ceiling, and optional 5V/2A hub power is separate from laptop charging.
A mixed USB-A/USB-C desk setup that needs four USB 3.2 Gen 2 data ports and can source the optional 5V/2A hub adapter if connected devices need supplemental power..
Skip it if you need four USB-A ports, guaranteed per-port simultaneous 10Gbps, a bundled external power adapter, or USB-C PD charging for the host.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- The manual names model GA1-2A2C-G2 and its two-USB-A/two-USB-C layout.
- A separate 5V/2A hub input and included host cable/USB-A adapter are documented.
- The manual lists Windows, macOS and Linux support.
What to weigh up
- 10Gbps is a maximum claim; port sharing and simultaneous performance are unspecified.
- The external power adapter is not included.
- Gray finish and historical ASIN B0BHS1XW5M are not mapped to the manual's model.
Specifications and exact model details
The key details
| Model covered | GA1-2A2C-G2 |
|---|---|
| Host connector | USB-C host cable; USB-A adapter included |
| USB 3.x data ports | Two USB-A and two USB-C USB 3.2 Gen 2 data ports |
| Installation | 0.5m cable; use on desk or near host |
| Hub power | Separate USB-C 5V/2A hub-power input; adapter not included |
| Host charging | No laptop PD pass-through 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 four-port mix for USB-A and USB-C data peripherals
The GA1-2A2C-G2 version of Yottamaster's GA1 hub divides its four downstream data connections evenly between USB-A and USB-C. That can fit a desk or laptop setup with a mix of current and older peripherals without needing a separate USB-C data adapter. The source manual distinguishes this version from GA1-4A-U3, which uses four USB-A connections and is limited to a different USB generation. Buyers should therefore verify the complete 2A2C-G2 suffix and inspect the port face rather than selecting any product titled “Yottamaster GA1.” The historical listing adds a gray variant clue, but the manual does not confirm color or connect this specific ASIN to the model.
Understand the 10Gbps claim in context
The manual states that the GA1-2A2C-G2 uses USB 3.2 Gen 2 and offers up to 10Gbps transfer. That is the interface maximum claimed for the model, not a separate guarantee to each downstream port. The manual does not say whether all four data outputs can reach that rate simultaneously or explain how bandwidth is shared. Host hardware and cable quality also affect the negotiated link, and the manual itself tells users to check that the computer supports the advertised generation. A buyer moving large files should match the host port, cable and attached drive to the same standard and treat the hub's figure as a ceiling rather than a measured result.
Keep optional power separate from host charging
This hub has a separate USB-C power input rated at 5V/2A for peripherals that may need more power than the host can supply. The manual says that an external adapter is optional and not included, and gives examples such as 2.5-inch drives or multiple peripherals. This input is not described as Power Delivery pass-through to charge the laptop. Buyers should check the side port's function and acquire a suitable 5V/2A supply if their intended devices need it. The manual does not guarantee that every combination of four bus-powered accessories will work without supplemental power; no testing under load is claimed.
Check cable, adapter and operating-system details
The GA1 manual lists a 0.5m USB-C host cable and a USB-A adapter in the package, and names Windows, macOS and Linux support. Those features can help when connecting the hub to either USB-C or USB-A host hardware, but switching to an older or lower-speed host link may limit the available data rate. The model uses four standard USB data ports; it is not documented as adding HDMI, Ethernet, card readers, audio or laptop charging. The same manual applies to a second GA1 configuration, so compare the detailed 2A2C-G2 row in its port table instead of treating all package and layout details as uniquely verified for the historical gray unit.
Use the tagged search to confirm the current variant
The manual provides a named, feature-specific base model that supports a model-based search. It does not link B0BHS1XW5M to GA1-2A2C-G2, and the old Amazon page could not be used to confirm a current offer. The source title's -GY suffix suggests gray, but that color clue is not independently confirmed by the manual. Before purchase, compare the model code, two-A/two-C port face, power-input label and cable contents on the seller's current page. No external adapter, laptop-charging feature, current price, inventory, color availability or measured data rate is assumed in this review.
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Before you buy
Does GA1-2A2C-G2 have four USB-A ports?
No; the manual lists two USB-A and two USB-C data outputs.
Is the 5V/2A socket a laptop-charging PD port?
The manual describes it as a separate power input for the hub.
Does B0BHS1XW5M map to this model?
No source verifies that historical ASIN 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.
- Yottamaster GA1 model-specific user manual ↗ — checked October 4, 2026.
- Yottamaster GA1 manual: 2A2C-G2 port layout, 10Gbps interface claim, optional 5V/2A input, cable and adapter contents ↗ — checked October 4, 2026.
- Historical Amazon ASIN returned a cache miss; manual does not map it to the GA1 variant ↗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.