Our take
CJ0705 offers a useful mix of USB, display, and card-reader functions on paper, but the seller's conflicting video statements and unclear charging role matter to buyers choosing a monitor adapter.
A USB-C laptop or tablet user who wants HDMI, two USB-A data connections, and SD/microSD readers and can verify the exact live item and video mode..
Avoid relying on it for confirmed 4K60 or 5K60 output, a known PD input, or an exact Amazon listing tied to the old ASIN.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- A product-specific listing names CharJenPro model CJ0705.
- Two USB 3.0 ports, HDMI, SD, and microSD are listed.
- The listing describes a charging function, although its exact role is unclear.
What to weigh up
- The listing conflicts between 5K/60Hz general copy and HDMI 4K/30Hz detail.
- The USB-C port role and delivered PD wattage are not established.
- The historical ASIN and structured code are unmapped.
Specifications and exact model details
The key details
| Model covered | CJ0705 |
|---|---|
| Host connector | USB-C host is named in the product-specific listing |
| USB 3.x data ports | Two USB 3.0 data ports are listed |
| Installation | Portable USB-C hub with HDMI and SD/microSD readers |
| Hub power | External adapter inclusion is not established |
| Host charging | A 100W charging claim is listed, but PD input and delivered host power are unclear |
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
Start from the listed model and port combination
The Mercado Libre listing identifies CharJenPro model CJ0705 and describes two USB 3.0 ports, HDMI, full-size SD and microSD reading, plus a USB-C connection. It is aimed at MacBook Pro and Air users in the page's title and also names iPad devices. That combination can help a laptop user connect a display, a couple of USB peripherals, and removable cards through one adapter. The listing does not explain the USB-C port's exact role in every field, so confirm whether the selected product uses that socket for host charging, peripheral data, or both before planning around it.
Keep the display claim conservative
One part of the listing mentions 5K video at 60Hz, while the more specific HDMI description says 4K at 30Hz. Those claims do not give a consistent picture of the output path. For a buyer choosing a monitor hub, refresh rate and connection role matter more than a broad resolution label. This profile records the explicit HDMI 4K/30 statement and preserves the conflict; it does not promise 5K60 or 4K60. Check the current CJ0705 manual or product diagram and confirm the MacBook or iPad host supports the required video mode.
Understand what two USB 3.0 ports provide
The listing identifies two USB 3.0 ports for peripherals. That is a modest number suited to a storage drive and one additional device, or to a small desk setup where more ports are not necessary. It does not establish 10Gbps USB 3.2 operation or a per-port transfer guarantee. Other CharJenPro products have different port layouts and revisions; the saved CJ0414 MacBar profile is not used to fill CJ0705's details. Compare the model code and port face rather than relying on the brand alone.
Interpret the 100W figure as a seller claim
The page advertises 100W charging, but it does not establish how much power reaches a particular computer, whether the charger is included, or how the rating changes with other ports in use. The USB-C connector's role is not clear across the product fields. If charging is essential, look for a diagram that labels a PD input and verifies the exact pass-through role. A 100W listing figure is not a guarantee that the hub outputs 100W to the host.
Use the card readers only with confirmed card requirements
SD and microSD slots are listed, which can make the adapter more useful for photography or file transfers than a USB-only hub. The seller excerpt does not identify reader generations, maximum capacity, transfer rate, or simultaneous use. If you transfer large camera files or require UHS-II, those details need confirmation from the exact current model information. The product listing is enough to recognize a card-reader hub, but not enough to recommend it for a defined high-speed card workflow.
Match the live result to CJ0705
The page gives a product-specific model number, but neither historical ASIN B07FXYVDF4 nor structured code 8541622199 is tied to that model by a source. The Amazon detail page was unreadable. Search for CJ0705 and confirm that the result retains the two USB 3.0 ports, HDMI, SD/microSD, and USB-C connection. This tagged model search is not a direct link to a verified current ASIN. Check the model code rather than transferring facts from the separate CJ0414 MacBar.
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Before you buy
What model does the listing name?
It identifies CharJenPro model CJ0705.
Is 4K60 verified?
No. The HDMI detail says 4K30 while general copy conflicts with a higher 5K60 claim.
Is B07FXYVDF4 confirmed as CJ0705?
No source inspected for this record maps the historical ASIN to the model.
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.
- Product-specific Mercado Libre listing naming CharJenPro model CJ0705 ↗ — checked October 5, 2026.
- Product-specific listing names CJ0705 and its USB-C host, two USB 3.0 ports, HDMI, SD/microSD readers, and conflicting display/charging claims ↗ — checked October 5, 2026.
- Historical ASIN page was unreadable and no source maps it to CJ0705 ↗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.