Our take
A versatile mini dock with Ethernet and card readers, constrained by a 4K30 display ceiling and a short fixed host cable.
A USB-C laptop owner who needs card slots, wired Gigabit Ethernet, several USB data ports and a single 4K30 display connection..
Users who require 4K60 video, a long replaceable cable, or a verified direct Amazon model match.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- SIIG identifies the exact SKU and lists three USB-A data ports.
- The dock adds SD, microSD, USB-C PD/data and Gigabit Ethernet.
- The 60W input and optional DC role are documented.
What to weigh up
- The HDMI output is specified only up to 4K30.
- Host video support is required and the fixed cable is 4.7 inches.
- The historical Amazon ASIN is not linked to a current offer.
Specifications and exact model details
The key details
| Model covered | JU-H30B11-S1 |
|---|---|
| Host connector | USB-C host connection; video requires native DisplayPort Alt Mode |
| USB 3.x data ports | Three USB-A Gen 1 ports up to 5Gbps and a USB-C PD/data port |
| Installation | Mini dock with embedded 4.7-inch host cable |
| Hub power | USB-C PD input up to 60W; optional 5V/2A DC input is separate |
| Host charging | Net wattage delivered to the laptop is not established |
Performance figures are manufacturer claims. Source checked October 15, 2026. Regional models and included accessories can differ.
Full review: how the features affect your choice
What the features mean for you
Check for DisplayPort Alt Mode on the host
The SIIG dock uses a USB-C host connector, but the manufacturer says HDMI works only when the computer's USB-C port carries a native DisplayPort Alt Mode signal. A USB-C socket used only for charging or data will not provide the listed display output. Confirm the exact laptop specification before buying and check any operating-system limits in the current documentation. The embedded cable is only 4.7 inches long, which may be convenient beside a notebook but may not reach around a stand or to a more distant desk location. A short fixed cable also means the dock cannot be repositioned independently from the host without adding a compatible extension path.
Match HDMI expectations to 4K30
SIIG lists the HDMI output up to 4K at 30Hz. That can suit standard office work, slides and general video, but it does not promise 4K60 or high-refresh gaming. If the intended monitor requires a particular refresh rate, confirm the exact mode in the product page and ensure the computer's output supports it. The product is a single-HDMI mini dock rather than a dual-display adapter. Its broad feature list should not be mistaken for a multi-monitor setup. The 4K30 limit is a practical difference from hubs advertising 4K60, so decide whether the display mode matches the work before choosing by the number of ports alone.
Use the USB, network and card connections for a mixed setup
The manufacturer lists three USB-A 3.1 Gen 1 ports up to 5Gbps, a USB-C port that handles PD and data, SD and microSD readers, and Gigabit Ethernet. That gives the dock a broader data mix than a simple USB expander: it can connect several peripherals, access memory cards and add wired networking from one short cable. The available product description does not provide an independent performance test or specify how throughput is shared among active USB and card connections. Treat 5Gbps and Gigabit as interface ratings, not simultaneous measured speed. Check the exact USB-C port role and the current manual if you plan to connect storage through that port while also passing power.
Plan the 60W power path and optional DC input
The dock's USB-C PD input is rated up to 60W; a charger is needed for pass-through charging and the source page does not say that one is included. A laptop that normally requires more than 60W may charge slowly or need its own supply. The mini dock also has an optional 5V/2A DC input described as useful if attached USB devices are unstable or not detected. SIIG identifies a separate accessory part number for a compatible power adapter, so do not assume the DC supply is bundled. Check whether your peripherals need independent power and whether you have a suitable charger before treating this as a single-cable desk solution.
Search by the SIIG SKU and keep the row ASIN separate
The manufacturer page and catalog identify JU-H30B11-S1, while the historical row uses B0748N794G. No inspected source tied those identifiers together or showed a current Amazon offer. Search by the exact SIIG SKU and compare the HDMI 4K30 limit, USB-C PD/data port, card readers and short host cable. SIIG has other mini docks and neighboring part numbers with different port combinations, so a near-match title is not enough to substitute another model. This review is based on the manufacturer's published specifications and a reseller SKU listing; it does not claim personal testing, current stock or buyer-review findings.
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Before you buy
Does the product page confirm 4K60?
No. SIIG rates the HDMI output up to 4K30, so this model does not meet a 4K60 requirement. The saved sources do not document a higher refresh rate for JU-H30B11-S1; check the display and host limits before choosing it.
Must the host USB-C port carry video?
Yes. The HDMI path requires native DisplayPort Alternate Mode over USB-C. A USB-C-shaped connector alone does not guarantee video output, so confirm the computer supports DP Alt Mode. This is the maker's compatibility requirement, not a test of every host.
Is B0748N794G verified as the current offer?
No. B0748N794G is only the historical row clue; the saved evidence does not verify that a current Amazon offer maps to JU-H30B11-S1. Use the exact-SKU search destination and compare the maker's model number and port layout before ordering.
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.
- SIIG official JU-H30B11-S1 product page ↗ — checked October 15, 2026.
- SIIG official JU-H30B11-S1 page; SKU, port and PD specifications ↗ — checked October 15, 2026.
- SIIG Type-C and Thunderbolt catalog; interface matrix and optional DC input ↗ — checked October 4, 2026.
- Cyberpuerta exact-SKU product record ↗ — checked October 4, 2026.
- Historical Amazon row B0748N794G; current SKU mapping not established ↗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.