Plugable TBT4-HUB3C vs USB4-HUB3A - Compact Thunderbolt 4 Hub Comparison 2026

Plugable TBT4-HUB3C vs USB4-HUB3A: two tiny hubs with one practical difference

The Plugable TBT4-HUB3C and Plugable USB4-HUB3A are easy to confuse because they solve almost the same problem. Both are compact Thunderbolt 4 and USB4 hubs. Both turn one laptop port into three rear downstream Thunderbolt 4 or USB4 ports. Both support up to 40Gbps data on those downstream ports, up to 15W device charging per downstream USB-C port, dual 4K@60Hz displays on compatible hosts, one 8K@30Hz display when the whole chain supports it, and 60W charging back to the laptop.

The difference is not the headline Thunderbolt spec. It is the extra legacy port and the price. The USB4-HUB3A adds one 10Gbps USB-A port and has a $169.99 MSRP. The TBT4-HUB3C is the purer USB-C version with no USB-A port and a $249.99 MSRP in the product data. Both include a 0.8m Thunderbolt 4 cable and a USB-C to HDMI adapter. Both need an external power brick.

The short verdict: the Plugable USB4-HUB3A wins for most buyers. The YAML gives it the higher score, 8.1/10 versus 8.0/10, and it costs less while adding the one port many people still need. The TBT4-HUB3C is still useful if you want the cleanest all-USB-C desk possible, but its lack of USB-A is hard to defend when the sibling model keeps the same core capability and adds that port.

If you are comparing these because you are not sure whether a small hub is enough, start with our USB-C vs Thunderbolt docking stations guide. If you know you want a full desk dock instead of a port multiplier, our best Thunderbolt 4 docks page is the better shortlist.

Quick specs comparison

What these hubs are, and what they are not

Neither product is a full docking station in the usual desktop sense. A full dock normally gives you fixed monitor outputs, Ethernet, audio, several USB-A ports, maybe a card reader, and enough charging to make the laptop’s own power brick optional. These two Plugable models are different. They are Thunderbolt and USB4 port multipliers.

That design is good if your desk already runs on USB-C. A USB-C monitor, a Thunderbolt SSD, a capture card, a USB-C card reader, or a USB-C to HDMI adapter can all hang from the three downstream ports. The hubs keep the box small and avoid the wide rear panel of a 12-port or 16-port dock. The TBT4-HUB3C YAML describes it as a compact hub for people who want more USB-C and Thunderbolt ports, not a desktop dock with Ethernet, audio, card readers, and fixed monitor outputs. The USB4-HUB3A YAML says almost the same thing, then adds the one USB-A port.

That distinction matters before you choose between them. If you need wired Ethernet, a headset jack, an SD reader, and HDMI built into the dock, neither is the right product. Look at a larger Plugable option like the Plugable TBT4-UD5 or the Plugable TBT4-UDX1. If you only need to turn one modern laptop port into more modern ports, these hubs make sense.

Port layout: USB-A is the whole argument

The TBT4-HUB3C has three rear downstream Thunderbolt 4 or USB4 ports. Each one is listed at up to 40Gbps with up to 15W device charging, and each can carry display output when the host supports it. That is the clean version of the product. You plug the laptop into the front host port, then use the three rear USB-C shaped ports for displays, storage, adapters, and other downstream devices.

The USB4-HUB3A keeps those same three downstream Thunderbolt 4 or USB4 ports, then adds one 10Gbps USB-A port. That sounds minor until you count the accessories on a real desk. A keyboard receiver, mouse dongle, webcam, older flash drive, USB audio interface, label printer, or hardware security key may still use USB-A. On the TBT4-HUB3C, one of those devices needs an adapter. On the USB4-HUB3A, it plugs straight in.

The USB-A port also protects the high-speed USB-C ports for the devices that actually need them. Burning a Thunderbolt 4 downstream port on a simple USB-A mouse receiver feels wasteful. The USB4-HUB3A avoids that without turning into a large dock.

Port winner: Plugable USB4-HUB3A. It has everything the TBT4-HUB3C has in the core downstream layout, plus one 10Gbps USB-A port. The TBT4-HUB3C only wins if you deliberately want no USB-A on the desk.

Display support: effectively a tie

The display sections in the two YAML files are almost matched. Both list dual 4K@60Hz support on compatible Thunderbolt 4 or USB4 hosts. Both list single 8K@30Hz support, with the usual caveat that the host graphics, display, cable, and adapter need to support it. Both also record Plugable’s single 6K support claim for Apple Silicon Macs, mapped into the site’s nearest available 5K schema field with the official 6K note preserved in text.

Neither hub has built-in HDMI or DisplayPort. You use the downstream USB-C or Thunderbolt ports for display output. Plugable includes a USB-C to HDMI adapter with each product, so the first HDMI monitor is covered. A second HDMI or DisplayPort monitor usually needs another adapter or a USB-C monitor cable.

The Mac limitations are also the same category of limitation. The TBT4-HUB3C YAML says base M1 and M2 Macs are limited to one external display, base M3 MacBooks need clamshell mode for dual display, and Pro, Max, base M4, base M5, and newer supported chips can support dual displays. The USB4-HUB3A YAML uses the same practical guidance. These are native Thunderbolt hubs, not DisplayLink docks, so they cannot create extra display outputs beyond what the Mac supports.

For Windows, both are best treated as Thunderbolt 4 or USB4 products. The TBT4-HUB3C YAML specifically says Plugable does not recommend Thunderbolt 3 Windows systems because downstream-port behavior can vary by controller, driver, and firmware. The USB4-HUB3A YAML says Thunderbolt 3 Windows systems are also less predictable and recommends Thunderbolt 4 or USB4 for the intended experience.

Display winner: tie. Buy one of these for dual 4K from a compatible native Thunderbolt 4 or USB4 laptop, not because one has a stronger monitor spec than the other.

Charging and power: same 60W limit, different brick size

Both hubs deliver up to 60W of USB-C Power Delivery to the host laptop. That number is enough for a MacBook Air, many 13-inch business laptops, and light 14-inch machines. It is not enough to replace the original charger for larger workstation laptops under sustained load. The YAML for both products says high-power systems may still need their own charger.

The external power adapters differ slightly. The TBT4-HUB3C uses an external 110W power adapter. The USB4-HUB3A uses an external 100W power adapter. In both cases, the power brick is required. These hubs are small on the desk, but they are not bus-powered travel hubs. You need to route the adapter behind the desk or pack it if you move the hub.

That is the main catch with this whole product class. The box itself is tiny, but the power system is not invisible. The TBT4-HUB3C YAML lists a bulky 110W adapter as a design con. The USB4-HUB3A YAML says the 100W adapter takes more space than the hub suggests. If you want something that lives permanently in a backpack and runs without wall power, these are not the best fit.

Charging winner: tie. Both are 60W host-charging hubs. The USB4-HUB3A has the smaller listed adapter, but the practical limit is the same.

Compatibility and driver behavior

Both products have driver type listed as None. That is a major reason to choose a native Thunderbolt or USB4 hub over a DisplayLink dock. You do not install display software. You do not deal with macOS screen-recording permissions for virtual displays. The hub depends on the laptop’s native USB4, Thunderbolt, graphics, firmware, and operating system support.

That simplicity cuts both ways. If your laptop supports two native external displays over Thunderbolt, these hubs can expose that capability. If your laptop does not, the hub cannot fix it. A base M1 or M2 MacBook is still a one-external-display machine with either model. If you need two external monitors from one of those Macs, look at DisplayLink options on our best docking stations for dual monitors page.

Windows buyers should update BIOS, Thunderbolt firmware, USB4 drivers, and graphics drivers if displays or downstream devices do not appear. The YAML common issues for both products mention Windows approval or authentication prompts for Thunderbolt devices. That is normal behavior, not a sign that the hub needs a special display driver.

Compatibility winner: tie. Both are driverless, native Thunderbolt 4 and USB4 hubs with similar Mac and Windows caveats.

Price and value: the USB4-HUB3A is easier to justify

The price gap is the cleanest reason the USB4-HUB3A wins. Its MSRP is $169.99. The TBT4-HUB3C is listed at $249.99. That is an $80 gap in favor of the USB4-HUB3A, and the cheaper model also adds the USB-A port.

The scores follow the same direction. The USB4-HUB3A scores 8.1/10 in the product data. The TBT4-HUB3C scores 8.0/10. That is not a huge difference, and it should not be exaggerated. These are close siblings. But when the lower-priced model has the higher score and the more practical port layout, the recommendation becomes straightforward.

The TBT4-HUB3C has one defensible lane: a desk that is completely USB-C and Thunderbolt. If you have USB-C monitors, Thunderbolt storage, USB-C adapters you already like, and no USB-A accessories, the simpler layout may appeal to you. But most buyers still have at least one USB-A device. The USB4-HUB3A acknowledges that reality without giving up the compact hub idea.

Value winner: Plugable USB4-HUB3A. Same display ceiling, same 60W host charging, same warranty length, lower MSRP, higher score, and one extra useful port.

Verdict: choose the USB4-HUB3A unless you want an all-USB-C hub

The Plugable USB4-HUB3A is the better compact Plugable hub for most people. It keeps the three downstream Thunderbolt 4 or USB4 ports, the driverless native display path, the dual 4K@60Hz support on compatible hosts, the included HDMI adapter, the 0.8m Thunderbolt 4 cable, and the 60W host charging. Then it adds a 10Gbps USB-A port and costs less in the product data. That is the whole comparison.

The Plugable TBT4-HUB3C is not a bad hub. Its product data still gives it an 8.0/10 score, and the core Thunderbolt expansion story is strong. It makes sense if you want three rear downstream USB-C shaped ports and nothing else. It is also the cleaner visual match for a desk where every accessory already uses USB-C or Thunderbolt.

For everyone else, the USB4-HUB3A is the safer buy. It is slightly more flexible, slightly higher rated in our product data, and cheaper. The USB-A port may look boring next to a 40Gbps Thunderbolt port, but boring ports are often the ones you miss first.

Choose the Plugable USB4-HUB3A if:

• You want the lower MSRP and higher product score
• You still have one USB-A accessory on the desk
• You want three downstream Thunderbolt 4 or USB4 ports without buying a full dock
• Dual 4K@60Hz on a compatible Thunderbolt 4 or USB4 host is enough
• 60W laptop charging fits your laptop
• You want the included HDMI adapter for a first HDMI monitor

Choose the Plugable TBT4-HUB3C if:

• You want a compact hub with only downstream USB-C and Thunderbolt ports
• You already own the USB-C adapters or USB-C displays you need
• You do not need USB-A at all
• You want the same dual 4K and 60W charging capability in the purer USB-C layout
• You are comfortable with the 110W external power adapter

For individual details, read our Plugable TBT4-HUB3C review and Plugable USB4-HUB3A review. If you want a larger Plugable dock with Ethernet, audio, card readers, and fixed monitor ports, compare the Plugable TBT4-UDZ vs TBT4-UD5 instead.