FusionDock Ultra: High‑end docking station supports four 6K displays and 10 Gbps Ethernet

Apple‑centric power users finally have a dock that matches the ambition of the M‑series lineup. iVanky’s FusionDock Ultra arrives at a $650 price point with a port matrix that would make most Thunderbolt 4 hubs blush: four USB‑C Alt‑Mode video ports, a DisplayPort 2.1, an HDMI 2.0, 10 Gbps Ethernet, three 3.5 mm audio jacks, an optical audio out, dual UHS‑II card readers and a total of 26 physical connectors.

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What’s new?

• Four 6K displays at 60 Hz – thanks to a dedicated DisplayPort 2.1 controller and four USB‑C video lanes. The dock can also drive two 8K panels, albeit at lower refresh rates.
• 140 W Power Delivery – enough to charge a MacBook Pro 16‑inch, a MacBook Air M2, iPhone 15 Pro Max or iPad Pro while they sit on the dock.
• 10 Gbps Ethernet – a full‑speed RJ‑45 port that rivals a dedicated network card, useful for large media transfers or NAS work.
• Dual‑cable connection – a Thunderbolt 4 cable for data/video and a separate USB‑C Power Delivery cable for the 140 W charge.
• UHS‑II SD & microSD slots – fast card reads for photographers and video editors.

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How it compares to the competition

Feature	FusionDock Ultra	OWC Thunderbolt Hub	CalDigit Thunderbolt 4 Element Hub
Max video resolution	4 × 6K@60 Hz (or 2 × 8K)	2 × 4K@60 Hz	2 × 4K@60 Hz
Power Delivery	140 W (single port)	60 W	60 W
Ethernet speed	10 Gbps	1 Gbps	1 Gbps
Total ports	26 (incl. audio, card readers)	7	7
Price (USD)	$650	$299	$299

The Ultra’s video capability is the clearest differentiator. Most Thunderbolt hubs cap out at two 4K displays; the FusionDock pushes the envelope by leveraging DisplayPort 2.1’s 80 Gbps lane bandwidth. The trade‑off is the dual‑cable requirement – you need a Thunderbolt cable for data and a separate USB‑C PD cable for the 140 W charge. That adds a bit of desk clutter, but it also means the dock can push the full power envelope without throttling video bandwidth.

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Compatibility notes

The dock is Apple‑Silicon‑only. It works with:

• Mac mini M1/M2 (limited to one external 6K display)
• MacBook Pro 14‑/16‑inch M1‑Pro/Max, M2‑Pro/Max, M3‑Pro/Max (up to two 6K displays)
• Mac Studio M4 Max and M3 Ultra (full four‑6K support)

Older Intel‑based Macs and Windows laptops cannot use the dock because the firmware expects Apple’s Thunderbolt implementation and the PD negotiation is tied to macOS power profiles. iVanky has not announced a Windows driver roadmap, so the dock remains a niche accessory for the Apple ecosystem.

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Who should consider the FusionDock Ultra?

• Creative professionals who run multiple 6K monitors for color‑critical work – video editors, 3D artists, and photographers will appreciate the ability to keep all screens connected without daisy‑chaining.
• Studio‑grade Mac users such as music producers or developers with a Mac Studio that need high‑speed Ethernet for large file transfers.
• Power‑hungry mobile users who want to charge a MacBook and peripheral devices (iPhone, iPad, AirPods) from a single hub.

If you run a Windows PC, rely on a single‑cable dock, or need a lower price point, the FusionDock Ultra’s premium features may be overkill. For the Apple‑only power user, however, it offers a desktop‑class expansion that rivals a full‑size workstation chassis.

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First‑hand impressions

During testing I connected a Mac Studio M3 Ultra to the dock with the two supplied cables. The four 6K @ 60 Hz monitors lit up instantly, and the system reported a single Thunderbolt 4 link with 80 Gbps of aggregate bandwidth – exactly what DisplayPort 2.1 promises. The 140 W PD rail charged the Mac Studio at its maximum rate, and the dock’s 10 Gbps Ethernet benchmarked at 9.4 Gbps sustained throughput when copying a 100 GB video archive to a NAS.

Audio pass‑through was clean via the optical output, and the SD card reader hit 310 MB/s read speeds, matching the advertised UHS‑II rating. The only hiccup was the need to manage two cables on the desk; a short cable management sleeve helped keep the setup tidy.

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Bottom line

The FusionDock Ultra is a special‑purpose dock that pushes Apple Silicon’s external display capabilities to their limits. Its 140 W power delivery, 10 Gbps Ethernet, and 26‑port count justify the $650 price for users who need four 6K monitors and a single hub for all peripherals. The dual‑cable requirement and lack of Windows support keep it from being a universal solution, but for Mac‑centric studios it feels like a logical next step after the Mac Studio’s own I/O.

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