Our take
Choose the GUD3C4K3 for a USB-C desk setup that needs a broad port selection and several display connectors, provided the computer meets IOGEAR's host requirements. Its key compromises are the operating-system display limit and an 85W maximum laptop charge after dock power use.
A fixed USB-C workstation that needs multiple video outputs, wired networking and card access, and whose computer supports the dock's display requirements and charging limit..
It does not suit a computer without USB-C DP Alt Mode, a macOS setup that needs three independent extended displays, or a laptop that requires more than 85W from the dock.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- IOGEAR documents a broad mix of USB data, display, network, card-reader and audio connections.
- The official page explains the DP 1.4 and macOS limits instead of treating every video connector as an independent screen.
- The manufacturer separates 100W pass-through input from the up-to-85W laptop output after dock power use.
What to weigh up
- Triple-display capability depends on a compatible DP 1.4 Alt Mode host; macOS is limited to one additional extended display.
- The dock uses up to 15W, leaving no more than 85W for the laptop from the listed 100W pass-through input.
- A USB-C AC adapter from the laptop is required for pass-through charging, and IOGEAR's package list does not include one.
Specifications and exact model details
The key details
| Model covered | GUD3C4K3 |
|---|---|
| Host connector | USB-C host cable; the computer must support USB-C DP Alt Mode for video. |
| USB 3.x data ports | Five USB 3.1 data ports: four USB-A and one USB-C; the charging USB-C port is separate. |
| Installation | Desktop dock with two HDMI outputs, one DisplayPort, Gigabit Ethernet, SD/microSD readers and combo audio. |
| Hub power | USB-C PD pass-through input up to 100W; IOGEAR lists the laptop's USB-C adapter as required and does not list one in the package contents. |
| Host charging | Up to 85W reaches the laptop after the dock uses up to 15W; the 85W figure is a maximum, not a guaranteed delivered rate under every setup. |
Performance figures are manufacturer claims. Source checked October 16, 2026. Regional models and included accessories can differ.
Full review: how the features affect your choice
What the features mean for you
Use the dock when one USB-C connection needs to replace several adapters
The GUD3C4K3 is a desk dock for a computer with USB-C video support. IOGEAR lists two HDMI outputs, one DisplayPort, four USB-A 3.1 ports, one USB-C 3.1 data port, Gigabit Ethernet, SD and microSD readers, and a combo audio jack. That combination can consolidate monitor, peripheral, wired-network and card-reader connections around one host cable. Its size and port range make it more suitable for a fixed setup than a small travel adapter. The port list describes available connections, not independent bandwidth for every attached device, so it should not be read as a performance benchmark.
Match the monitor plan to the computer and operating system
IOGEAR says a DP 1.4 Alt Mode host supports the triple-display arrangement and lists the two HDMI outputs and DisplayPort for up to 3840 by 2160 at 60Hz with that host. The manufacturer describes Windows USB-C laptops as able to mirror or extend to three displays. On macOS, where MST is not supported, only one additional display can be used for an extended desktop. Three video connectors therefore do not guarantee three independent extended screens on every computer. Check the laptop's USB-C video capability and the operating system's display behavior before planning a monitor layout.
Budget for the dock's share of USB-C charging power
The PD input is rated up to 100W, but IOGEAR says the dock can use up to 15W, leaving up to 85W for the laptop. The computer's own USB-C AC adapter is needed for pass-through charging, and the package list names the dock, quick-start guide and warranty card rather than a power adapter. This matters for a workstation whose laptop normally draws close to or above 85W: the maximum delivered by the dock may be lower than the computer's usual charger rating. Treat 100W as the input ceiling and 85W as the stated upper limit to the host, not as a guaranteed charging rate under every load.
Separate data ports from the dedicated charging connection
The official port map identifies four USB-A 3.1 data ports and one USB-C 3.1 data port, in addition to a separate USB-C connection for up-to-100W PD input. The distinction helps avoid counting the charging socket as another peripheral data port. Ethernet, SD/microSD and combo audio can also reduce the number of separate adapters needed at a desk. IOGEAR lists the connections and their standards but does not provide independent transfer measurements for multiple simultaneous devices. If several drives will be active together, the published port count alone does not tell you their shared real-world throughput.
Verify the exact part and the computer's limits before choosing it
Amazon's saved item-details check identifies B09WGB61XH as model and manufacturer part number GUD3C4K3, matching the IOGEAR product page. That supports a direct tagged product link for this model. The practical fit still depends on the computer having USB-C DP Alt Mode, the number of extended screens supported by its operating system, and whether up to 85W is enough for its charging needs. IOGEAR's system requirements identify compatible interface and operating-system conditions rather than a list of specific laptop models. The review relies on those manufacturer specifications and the saved model crosswalk; it does not claim personal testing or summarize buyer reviews.
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Before you buy
What model is Amazon ASIN B09WGB61XH?
The saved Amazon item-details record identifies it as IOGEAR GUD3C4K3.
Can the dock extend three displays on macOS?
No. IOGEAR says macOS supports one additional extended display because MST is not supported.
How much power can reach the laptop?
Up to 85W after the dock uses up to 15W from its 100W pass-through input; the laptop's USB-C AC adapter is required.
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.
- IOGEAR official GUD3C4K3 product page, including the connector map, display modes, system requirements and power allocation ↗ — checked October 16, 2026.
- IOGEAR GUD3C4K3 official product page: model, complete port map, video modes, OS behavior, package contents and PD allocation ↗ — checked October 16, 2026.
- IOGEAR GUD3C4K3 datasheet, retained from the saved source packet ↗ — checked October 5, 2026.
- Amazon item details crosswalk the B09WGB61XH listing to model and manufacturer part number GUD3C4K3 ↗Paid link · We may earn a commission. — checked October 5, 2026.
- Amazon US model listing checked October 5, 2026; current condition, price, and availability are confirmed by the seller.
Is it the right fit?
Check the exact model and today’s offers on Amazon.