Plugable TBT4-HUB3C vs TBT4-UDZ - Thunderbolt 4 Comparison 2026

Plugable TBT4-HUB3C vs TBT4-UDZ: same brand, very different jobs

The Plugable TBT4-HUB3C and Plugable TBT4-UDZ both sit in Plugable’s native Thunderbolt 4 and USB4 lineup, but they solve different problems. The TBT4-HUB3C is a small expansion hub. It turns one laptop Thunderbolt 4 or USB4 port into three downstream Thunderbolt 4 or USB4 ports, with 60W host charging and an included USB-C to HDMI 2.0 adapter.

The TBT4-UDZ is a full desktop dock. It is built around fixed monitor outputs, legacy USB, wired networking, memory cards, audio, and stronger laptop charging. Its product data lists two HDMI 2.0 ports, two DisplayPort 1.2 ports, six USB-A ports, one USB-C 3.2 port, 2.5 Gigabit Ethernet, SD and microSD UHS-II card readers, a 3.5mm combo audio jack, and 98W USB-C Power Delivery.

The short verdict: the Plugable TBT4-UDZ wins overall because it does more for a normal desktop. It has the same 8.0 product score as the TBT4-HUB3C, but it supports up to four 4K displays on the right Windows laptop, charges at 98W instead of 60W, and includes the fixed ports most desks need without adapters. The TBT4-HUB3C still has a clean reason to exist: it is the better choice if you specifically want three downstream Thunderbolt ports in a compact box.

If you are still choosing between native Thunderbolt, USB-C, and driver-based display expansion, read our USB-C vs Thunderbolt docking stations guide first. For a wider shortlist, see our best Thunderbolt 4 docking stations guide.

Quick specs comparison

Hub versus dock: what you are really buying

The TBT4-HUB3C is not a small version of the TBT4-UDZ. It is a different category. Its YAML describes it as a compact Thunderbolt 4 and USB4 hub for people who want more USB-C and Thunderbolt ports, not a full desktop dock with Ethernet, audio, card readers, and fixed monitor outputs.

That distinction matters. If your desk is built around USB-C monitors, Thunderbolt SSDs, USB4 capture gear, and adapters you already like, the TBT4-HUB3C can be cleaner than a wide dock. One box gives you three high-speed downstream ports, each with up to 40Gbps data, up to 15W device charging, and display output when the host supports it. You decide what each port becomes.

The TBT4-UDZ is much less abstract. It assumes your desk has monitors, USB-A accessories, Ethernet, headphones, and memory cards. It gives you those ports directly. You do not need to spend one downstream Thunderbolt port on an HDMI adapter, another on Ethernet, and another on a card reader. The dock has those jobs covered before you add anything else.

That is why the UDZ wins the overall comparison. Most people shopping for a desktop dock are trying to reduce adapter clutter. The HUB3C can reduce clutter for a USB-C-heavy desk, but it can create more clutter on a mixed desk.

Category winner: depends on the setup. The TBT4-HUB3C is the cleaner Thunderbolt expansion hub. The TBT4-UDZ is the better full desktop dock.

Display support: the UDZ is built for monitor count

Display output is the TBT4-UDZ’s strongest advantage. Its YAML lists up to four 4K displays at 60Hz through two HDMI 2.0 ports and two DisplayPort 1.2 ports on Thunderbolt 4 or USB4 Windows systems with DP 1.4 HBR3 DSC support. It also supports dual 4K at 60Hz on Thunderbolt 3 and Thunderbolt 4 Windows systems, and on supported Mac chips.

The TBT4-HUB3C tops out lower. Its YAML lists dual 4K at 60Hz on compatible Thunderbolt 4 or USB4 hosts, single 8K at 30Hz when the whole chain supports it, and single 6K support on Apple Silicon Macs recorded in the notes. The hub can be good for a two-monitor USB-C setup, especially because Plugable includes one USB-C to HDMI 2.0 adapter, but it is not a four-monitor dock.

Cabling is another big difference. The HUB3C has no built-in HDMI or DisplayPort. Display output comes through downstream Thunderbolt or USB4 ports, so HDMI and DisplayPort monitors need adapters unless they accept USB-C input directly. The UDZ has two HDMI ports and two DisplayPort ports on the dock. For a permanent monitor setup, that is easier to wire and easier to explain.

Mac buyers need the same caution with both. Neither product uses DisplayLink. Neither can bypass Apple’s native display limits. The HUB3C YAML says base M1 and M2 Macs are generally limited to one external display, base M3 dual display depends on clamshell behavior, and supported Pro, Max, base M4, base M5, and newer chips can support two. The UDZ YAML says base M1 and M2 Macs are limited to one display, while M1 Pro/Max and later can use dual 4K.

Display winner: Plugable TBT4-UDZ. Four fixed video outputs and quad 4K support on compatible Windows systems put it in a different class from the HUB3C.

Thunderbolt expansion: the HUB3C fights back

The HUB3C’s best feature is also the one the UDZ lacks: three downstream Thunderbolt 4 or USB4 ports. This is the reason to buy the hub. If you have Thunderbolt storage, a USB-C monitor, a USB4 capture device, or several USB-C adapters, the HUB3C gives you a flexible fan-out from one laptop port.

Each of those three downstream ports is listed in the YAML as USB-C version 4.0 with 15W power delivery, and the video section records them as Thunderbolt 4 ports. That matters if your accessories are built around high bandwidth USB-C shaped ports. You are not forced into fixed HDMI or DisplayPort lanes.

The TBT4-UDZ has no downstream Thunderbolt 4 port. Its port layout commits to fixed video outputs and desktop I/O instead. That is not automatically bad. It is exactly what quad-display buyers want. But if you use a Thunderbolt SSD or a USB4 peripheral that needs a real downstream Thunderbolt path, the UDZ does not give you one.

This is the cleanest carveout for the HUB3C. It loses as a broad dock, but it wins as a Thunderbolt port multiplier. The mistake would be buying the UDZ and then realizing your desk needed downstream Thunderbolt ports more than four fixed monitor outputs.

Thunderbolt expansion winner: Plugable TBT4-HUB3C. Three downstream Thunderbolt 4 or USB4 ports are its whole reason to exist.

USB, Ethernet, audio, and card readers

For ordinary desktop ports, the comparison swings hard toward the TBT4-UDZ. The HUB3C has no built-in USB-A, Ethernet, audio jack, SD reader, or microSD reader. Its YAML even lists this as a major feature con. You can add those features through USB-C adapters, but every adapter uses one of the hub’s downstream ports.

The TBT4-UDZ has a full desktop spread. Its YAML lists six USB-A ports across USB 3.2, USB 3.0, and USB 2.0, plus one USB-C 3.2 port. It also has RJ45 Ethernet with 1 Gbps and 2.5 Gbps speeds, a 3.5mm combo audio jack, and UHS-II SD and microSD readers rated at 312 MB/s.

That is not just a longer spec list. It changes the day-to-day setup. A keyboard receiver, mouse, webcam, headset, Ethernet cable, camera card, and several monitors can all live on the UDZ without turning the dock into an adapter tree. With the HUB3C, you need to be comfortable choosing and managing adapters.

The Ethernet difference is especially simple. The HUB3C has none. The UDZ has 2.5 Gigabit Ethernet. If your router, switch, NAS, or internet plan can use faster-than-Gigabit wired networking, the UDZ has the only built-in path between these two products.

Daily port winner: Plugable TBT4-UDZ. The HUB3C is intentionally minimal. The UDZ is the one that behaves like a complete desk dock.

Charging and power behavior

The TBT4-UDZ also wins on host charging. Its YAML lists 98W USB-C Power Delivery. That is enough for most ultrabooks, MacBook Air models, many business laptops, and plenty of 14-inch performance machines. Large workstation laptops can still need their original charger under sustained load, but 98W gives you much more headroom than 60W.

The TBT4-HUB3C delivers up to 60W to the host. That is fine for a MacBook Air, many 13-inch business laptops, and lighter notebooks. Its YAML calls out the limitation directly: 60W is not enough for larger workstation laptops under heavy load. If you are trying to run one cable to a higher-power machine, this is the first spec to check.

Both products require external power. The HUB3C uses a 110W power adapter, and the YAML notes that the brick is bulky compared with the hub. The UDZ uses a 135W power brick, and its YAML warns that laptop charging may throttle to around 60W when many high-power USB devices are connected. That is the trade-off of a dock with many things plugged into it.

The practical answer is still straightforward. If your laptop only needs 60W and you want a small hub, the HUB3C is fine. If you want more charging headroom through the same cable that drives monitors and desk accessories, the UDZ is safer.

Charging winner: Plugable TBT4-UDZ. 98W beats 60W, even with the UDZ’s high-load power caveat.

Compatibility and driver behavior

Both products have driver type listed as None. That is good if you want native Thunderbolt behavior and do not want DisplayLink software. It also means both products depend on the host computer’s real display capabilities. They will not magically turn a one-display base M1 or M2 Mac into a dual-display Mac.

The HUB3C is happiest with Thunderbolt 4 or USB4 hosts. Its YAML says Plugable does not recommend Thunderbolt 3 Windows systems because downstream-port support can vary by controller, driver, and firmware. It can work well in the right setup, but the product data is clear that host capability matters.

The UDZ is also host-sensitive, especially for its headline feature. Quad 4K requires a Thunderbolt 4 or USB4 Windows laptop with DP 1.4 HBR3 DSC support. Thunderbolt 3 systems are limited to dual 4K. Mac systems do not get the four-display mode.

So the safer compatibility summary is this: neither product is a workaround dock. If your laptop’s graphics and Thunderbolt implementation can support the setup, these products expose it cleanly. If your laptop cannot, you need a different class of dock, often DisplayLink, rather than expecting a native Thunderbolt product to create extra display streams.

Compatibility winner: tie. Both are driverless native Thunderbolt products with host-dependent display support. The HUB3C has the more flexible downstream layout, while the UDZ has the more demanding quad-display mode.

Price and value

The HUB3C has the lower MSRP: $249.99 versus $419.00 for the UDZ. If you only need three downstream Thunderbolt ports, that difference matters. The hub is cheaper, smaller, and more focused. Paying more for four fixed video outputs, USB-A, Ethernet, audio, and card readers makes no sense if those features will sit unused.

The score comparison is a tie. Both products score 8.0/10 in the YAML. That tie is useful because it keeps the verdict from turning into a fake quality gap. The HUB3C is not worse at its job. It is simply a narrower product.

The UDZ justifies its higher price when you use its broader spec sheet. Quad 4K support on compatible Windows systems, two HDMI ports, two DisplayPort ports, six USB-A ports, 2.5GbE, audio, UHS-II card readers, and 98W host charging are all built into the dock. If you would otherwise buy adapters or a separate display solution, the price gap starts to make sense.

For most desktop buyers, value follows use case. The HUB3C is better value for a modern USB-C and Thunderbolt accessory chain. The UDZ is better value for a full desk where fixed monitor outputs and built-in ports avoid extra adapters.

Value winner: conditional. The HUB3C wins if downstream Thunderbolt expansion is the goal. The UDZ wins if you need a complete dock.

Verdict: choose the UDZ for a desktop, choose the HUB3C for Thunderbolt expansion

The Plugable TBT4-UDZ wins overall because it is the more complete docking station. The YAML gives both products the same 8.0 score, but the UDZ has the broader capability set: up to four 4K displays on compatible Windows systems, 98W host charging, fixed HDMI and DisplayPort outputs, six USB-A ports, 2.5GbE, audio, and SD plus microSD UHS-II readers.

The Plugable TBT4-HUB3C is still the better buy for one specific buyer: someone who wants three downstream Thunderbolt 4 or USB4 ports in a compact hub. It is not trying to replace the UDZ’s monitor and desktop-port layout. It is trying to multiply high-speed USB-C shaped ports, and it does that cleanly.

Choose the Plugable TBT4-UDZ if:

• You want a full desktop dock rather than a compact hub
• You need up to four 4K@60Hz displays on a compatible Windows Thunderbolt 4 or USB4 laptop
• You want built-in HDMI and DisplayPort outputs
• You need USB-A, 2.5GbE, audio, SD, and microSD built in
• You want 98W host charging instead of 60W
• You do not need downstream Thunderbolt 4 ports

Choose the Plugable TBT4-HUB3C if:

• You specifically need three downstream Thunderbolt 4 or USB4 ports
• Your desk already uses USB-C displays, Thunderbolt storage, or USB-C adapters
• Two external displays are enough
• 60W host charging fits your laptop
• You want a smaller hub with a lower MSRP
• You do not need built-in USB-A, Ethernet, audio, or card readers

For individual product details, read our Plugable TBT4-HUB3C review and Plugable TBT4-UDZ review. If you want a middle-ground Plugable option with fixed HDMI and at least one downstream Thunderbolt port, compare the Plugable TBT4-HUB3C vs TBT4-UD5 and Plugable TBT4-UDZ vs TBT4-UD5 pages next.