Plugable TBT-UDH2 review: The first dual-HDMI Thunderbolt 5 dock for Mac

Price When Reviewed

$349.95

Best Prices Today: Plugable Dual HDMI Thunderbolt 5 Docking Station (TBT-UDH2)

Mac Thunderbolt docking stations have long offered two basic solutions for monitor support, using either one or more Thunderbolt ports to connect displays and/or a DisplayPort—forcing HDMI users to buy a separate and messy adapter cable to fully utilize the dock.

To their rescue comes Plugable, with its new 16-port Thunderbolt 5 docking station that includes two HDMI 2.1 ports and a downstream Thunderbolt 5 port as well as the upstream Thunderbolt 5 port to the host computer. It’s ideal for its target audience: Mac users looking for a setup of two external HDMI monitors plus the fast 80Gbps data bandwidth of Thunderbolt 5.

First unveiled at CES 2026, Plugable’s new Thunderbolt 5 TBT-UDH2 dock not only includes dual HDMI 2.1 but a generous six downstream USB-C/Thunderbolt ports—two with a power output of 30W, which is perfect for fast-charging your iPhone and/or iPad.

Who is the Plugable Thunderbolt 5 TBT-UDH2 Dock for?

With its two top-end HDMI 2.1 ports, the Plugable TBT-UDH2 is the solution for those of us who need a two-display setup based on HDMI without needing external video adapters. It’s not for owners of the MacBook Neo or base M1/M2 Macs but it offers much for just about everyone else. You can buy cheaper but not at this level of functionality.

Specs and features

• One upstream Thunderbolt 5 port (80Gbps, 140W)
• One downstream Thunderbolt 5 port (80Gbps, 30W)
• Two HDMI ports (2.1)
• One USB-C port (10Gbps, 30W)
• One USB-C port (10Gbps, 4.5W)
• Three USB-C ports (5Gbps, 4.5W)
• One USB-A port (10Gbps, 4.5W)
• Two USB-A ports (5Gbps, 4.5W)
• Ethernet (2.5Gb)
• UHS-II SD card reader (312MBps)
• UHS-II microSD card reader (312MBps)
• 3.5mm combo audio jack (front)
• 180W power supply

Many docks come with one upstream and three downstream Thunderbolt (TB) ports (Intel’s reference design). Others trade one of the TB ports for a DisplayPort as it is expected that connecting to at least one external monitor is at the heart of any dock’s purpose.

Thunderbolt is built on DisplayPort (DP) technology, combining two main data highways into a single cable: PCI Express (for data and devices) and DisplayPort (for video and monitors). (Thunderbolt 1 and 2 even used the same physical connector as Mini DisplayPort, but beginning with Thunderbolt 3, the technology was adapted to piggyback onto the universal USB-C connector.)

That close technical relationship between Thunderbolt and DisplayPort, and DisplayPort’s superior capabilities, meant that it was a natural fit for docks to trade a TB port for a DP. However, it left owners of HDMI monitors scrabbling around to find a DisplayPort-to-HDMI adapter cable.

HDMI 2.1 has largely caught up with DisplayPort in terms of capability, although gamers and top-end video professionals might still prefer DisplayPort as it offers up to 240Hz refresh rates for 4K displays, while HDMI is ‘limited’ to 120Hz.

Rather than offering two additional downstream Thunderbolt 5 ports, Plugable allocates these two “pipes” to two dedicated HDMI outputs and leaves one downstream Thunderbolt 5 port available for additional expansion (including Thunderbolt daisy-chaining) or display use.

As macOS doesn’t support MST (Multi-Stream Transport), only one of the HDMI ports would normally function on a Mac if the dock also preserved two downstream Thunderbolt ports. Windows does support MST so is much more able when it comes to multi-display setups.

Even if your current Mac uses Thunderbolt 4, the Plugable Dual HDMI TBT-UDH2 Docking Station will operate (although not with Thunderbolt 3 Macs) as Thunderbolt 5 is backwards compatible. It makes sense to buy Thunderbolt 5 now in anticipation of your next hardware upgrade.

Display capability

The Plugable TBT-UDH2 can support up to dual 8K/60Hz (7680 x 4320 pixels) or 4K/144Hz, depending on the model of Mac and its M-series processor.

At the top, a Mac with an M4 Max or M5 Max chip can support two 8K/60Hz displays or two at 4K/144Hz.

M4/M5 Pro, M2/M3 Pro/Max or base M4/M5 Macs can connect two 6K/60Hz displays or 4K at 144Hz. Macs with an M1 Pro/Max support two 6K/60Hz but lack the 4K/144Hz option.

Macs with a base M1/M2 are limited to one 6K/60Hz external display. While this is a dock with a lot more than just flexible video options, owners of the older base M1/M2 should be looking to the best DisplayLink docks for multi-monitor options with software workarounds. MacBook Neo users should also look for a DisplayLink dock, and don’t need the 80Gbps bandwidth of a Thunderbolt 5 docking station.

For more expansive display options, M5 Pro and M5 Max users can add a third display to the downstream Thunderbolt 5 port. M5 Max users can even stretch to four displays, using Thunderbolt’s daisy-chaining capabilities.

Displays with HDMI can be connected to the 2x HDMI 2.1 ports. The downstream Thunderbolt port can provide up to 120Gbps via TB5’s Bandwidth Boost, and can be used to connect up to one display via USB-C/Thunderbolt or via USB-C to HDMI or USB-C to DisplayPort cables/adapters.

Only two displays may be used at a time (HDMI+HDMI or HDMI+Thunderbolt/USB-C Alt Mode).

A three-display setup with an M5 Pro or M5 Max would consist of two HDMI displays plus one USB-C DP Alt Mode or Thunderbolt display connected via the front downstream Thunderbolt 5 port. In tests, three 4K 144Hz HDR displays have been proved to work simultaneously. The M5 Max theoretically supports four displays with two HDMI displays plus two Thunderbolt displays that are connected in series to each other (daisy-chained) but neither we nor Plugable have tested this in practice.

 Not forgetting the 9 USB ports

This compact dock manages to fit nine downstream USB ports alongside the two HDMI.

One is Thunderbolt 5 with 30W device charging, compared to TB’s usual 15W output. That’s enough power to fast-charge an iPhone or iPad. It can also be used as a video port if required—maybe your second monitor is USB-C rather than HDMI.

There’s a 10Gbps USB-C port that also has 30W power output at your disposal. Both 30W ports are located at the front for easy access.

In comparison, the $399.99 CalDigit TS5 provides less charging power overall for your devices, with only 15W from each downstream Thunderbolt 5 port and 20W from its front USB-C port. The CalDigit TS5 Plus steps up accessory charging with 36W from each downstream Thunderbolt 5 port and 36W from the front USB-C port, but costs $499.99.

Also at the front are one USB-C and one USB-A data port, both rated at a speedy 10Gbps.

As you’d expect, both card readers are also facing you as you work, and these are fast UHS-II at 312MBps.

There’s an audio jack at the front and also a handy power button so you can rest assured that no power is going to your MacBook’s battery while you aren’t using it. Apple’s battery tech should handle that anyway, but I like the option to power off.

At the back, alongside the two HDMI 2.1 ports are the upstream Thunderbolt 5 port, plus three 5Gbps USB-C data ports and two 5Gbps USB-A.

The upstream TB5 port can supply up to 140W of Power Delivery (3.1), which is enough to fast-charge even the 16-inch MacBook Pro.

Rounding it off is an Ethernet port for stable wired network access, and this is rated at 2.5Gb, two and a half times faster than standard Gigabit Ethernet (1Gb) if your network supports it. If your network is still 1GbE, it will still work as it’s backwards compatible and forwards too for 5GbE and 10GbE.

It comes with an external 180W power supply, so when going full pelt to a PD 3.1 laptop, there will be 40W remaining for the other ports. In most scenarios the laptop will be taking a lot less than 140W so both 30W charging ports should be able to cope just fine.

Design

The space gray aluminum dock can be oriented vertically or horizontally to best fit your desk. Grilles along the sides aid cooling as the dock is fanless for silent operation. Runners are included if you want the horizontal orientation.

It is compact, measuring 5.9 x 2 x 3 inches (150 x 50 x 75mm) and weighs just over 2lbs (a little under 1kg) without the power supply.

In terms of physical security, it comes with both a standard K-slot and a Kensington Nano slot (K-slot nano), ensuring lock standard compatibility.

What you gain and what you give up

You gain dual HDMI 2.1 outputs without adapters, Thunderbolt 5 performance, 140W laptop charging, nine USB ports, 2.5Gb Ethernet, and fast UHS-II card readers—making it one of the most capable docks for HDMI-based Mac setups.

You miss out on two potential downstream Thunderbolt 5 ports, limiting expansion flexibility compared with traditional Thunderbolt 5 docks such as the CalDigit TS5 or Plugable TBT-UDT3. Base M1/M2 Macs remain restricted to a single external display, Thunderbolt 3 Macs aren’t supported, and availability is currently limited to North America.

Price

Available in North America only at the time of writing, the Plugable Dual HDMI Thunderbolt 5 Docking Station (TBT-UDH2) is priced at $349.95.

This is at the upper-end for Thunderbolt 5 docks, but the 16 ports are well chosen, and dual-screen setups will be boosted by the double dose of HDMI 2.1.

If you just want all the basics you need at top speed and an attractive price point, the £299.99 Plugable TBT-UDT3 Dock has three downstream Thunderbolt 5 ports (each at 15W), three USB-A ports and pretty much everything the TBT-UDH2 has in terms of Ethernet and card readers.

That extra $50 gets you a big upgrade on the number of USB ports and device-charging capability, although you are sacrificing two of the downstream TB5 ports for the convenience of the double HDMI.

See our reviews and comparisons of the other best Thunderbolt docking stations.

Should you buy the Plugable Dual HDMI Thunderbolt 5 Docking Station?

The TBT-UDH2 is an exceptionally able docking station with 80/120Gbps Thunderbolt 5 bandwidth, an incredible nine downstream USB ports, 2,5Gb Ethernet, fast card readers and unique dual-HDMI 2.1 ports that for many users will do away with the need for extra adapters.