The catch
Plugable TBT-UDH2
It has just one downstream TB port, and its ordinary USB-C data sockets cannot serve as extra video outputs.
Side by side
TBT-UDH2 vs TBT-UDT3 from Plugable: HDMI cables stay with UDH2, three Thunderbolt branches come with UDT3
Quick verdict
Two HDMI cables plug straight into the TBT-UDH2, while the TBT-UDT3 offers three downstream Thunderbolt branches. The UDH2 fits two compatible HDMI screens and one TB accessory. The UDT3 fits two compatible USB-C or Thunderbolt screens and a TB drive. Because both offer 140W host charging and 2.5GbE, those features will not settle the choice. Power is where they differ: each of the UDT3’s TB ports supplies 15W, against 30W from the single downstream port on the UDH2.
Before you buy
Why, and what it costs you
Change the monitor cables and the better dock changes too
With two HDMI screens and a Thunderbolt SSD, UDH2 fits without any video adapter, since the screens take its two HDMI outputs and the SSD takes its one downstream TB port. UDT3 can handle the same setup on a supported host, but every HDMI screen needs a compatible USB-C video adapter or cable, and that uses up two of its three TB branches. Swap the screen type and the verdict flips. Two USB-C or Thunderbolt screens and the same drive fit neatly into UDT3’s three branches, whereas UDH2 has just one direct TB branch. A monitor with more than one input might let you reroute, but do not assume USB-C-only screens will take a simple reverse HDMI cable. Choose based on the inputs your monitors have.
Where this comes from
The comparison is two HDMI screens and one TB drive against two USB-C display branches and one TB drive. Branches are counted directly from the exact port layouts, with host support and adapter direction stated.
The catch
Plugable TBT-UDT3
There are no fixed HDMI or DP sockets. Each downstream TB port supplies 15W, which means a portable display that draws more may need its own power.
Plugable TBT-UDH2
- Why pick it
- Your two HDMI screens should keep their current cables, with a TB port left over for a compatible drive.
- A compatible accessory wants more than 15W from the video-capable TB port, and the UDH2 supports up to 30W there. Check the exact power profile.
- The catch
- It has just one downstream TB port, and its ordinary USB-C data sockets cannot serve as extra video outputs.
Plugable TBT-UDT3
- Why pick it
- A TB drive and two USB-C or Thunderbolt displays call for three direct branches, and your host has to support the screens.
- You like the flexibility of TB connections and are fine buying separate HDMI or DP adapters for any monitor that needs one.
- The catch
- There are no fixed HDMI or DP sockets. Each downstream TB port supplies 15W, which means a portable display that draws more may need its own power.
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What this page compares
TBT-UDH2 vs TBT-UDT3 for HDMI screens, USB-C displays and a Thunderbolt SSD. Before you choose, tally the adapters, the spare ports and the power a portable monitor needs.
Both are Plugable Thunderbolt 5 desktop docks from the same family, with 140W host charging and 2.5GbE. They suit the same permanent desk, but each hands out video and accessory connections in its own way.
Which one fits
Pick the situations that sound like you
Two HDMI monitors and a TB drive need to stay connected
UDH2 plugs both screens in directly, while UDT3 needs compatible video adapters.
- Plugable TBT-UDH2
- Better fit
- Plugable TBT-UDT3
- Caution
Direct branches are needed for two USB-C-only monitors and a TB drive
UDH2 has one downstream TB port and UDT3 has three.
- Plugable TBT-UDH2
- Not suitable
- Plugable TBT-UDT3
- Better fit
A compatible portable display has an explicit 20W requirement on its video cable
UDH2’s TB port provides 30W and each UDT3 port provides 15W. Check the exact PD profile.
- Plugable TBT-UDH2
- Better fit
- Plugable TBT-UDT3
- Caution
The host must work with 140W power and 2.5GbE
Each dock reaches those maximums, subject to host and network conditions.
- Plugable TBT-UDH2
- Good
- Plugable TBT-UDT3
- Good
In practice
Differences you will notice
Change the monitor cables and the better dock changes too
With two HDMI screens and a Thunderbolt SSD, UDH2 fits without any video adapter, since the screens take its two HDMI outputs and the SSD takes its one downstream TB port. UDT3 can handle the same setup on a supported host, but every HDMI screen needs a compatible USB-C video adapter or cable, and that uses up two of its three TB branches. Swap the screen type and the verdict flips. Two USB-C or Thunderbolt screens and the same drive fit neatly into UDT3’s three branches, whereas UDH2 has just one direct TB branch. A monitor with more than one input might let you reroute, but do not assume USB-C-only screens will take a simple reverse HDMI cable. Choose based on the inputs your monitors have.
How we worked this out
The comparison is two HDMI screens and one TB drive against two USB-C display branches and one TB drive. Branches are counted directly from the exact port layouts, with host support and adapter direction stated.
A portable second screen may still need a power cable of its own
Reference notes, calls or a child’s homework at a shared desk are all good uses for a portable screen next to the main monitor. UDT3 offers more TB branches, but each one is capped at 15W. UDH2 can supply up to 30W from its single downstream TB port. When the exact screen needs a compatible 20W input for the mode you intend to run, UDH2 has enough stated wattage and UDT3 does not. Compatibility still comes down to the display’s accepted PD profile and the cable. If the screen runs fully on 15W, UDT3’s extra branches may be worth more to you. And do not mistake the dock’s 140W laptop rating for power available to the portable screen.
How we worked this out
A hypothetical 20W display requirement is set against downstream maximums of 15W and 30W. Enough power is necessary for compatibility but does not guarantee it. Nothing is predicted about brightness or battery life.
All three Thunderbolt sockets can be taken before the phone shows up
Two compatible USB-C monitors and one TB drive can use up all three of UDT3’s branches. A phone or other USB-C accessory then has to go through a free USB-A route with the right cable, a suitable hub or a laptop port. UDH2 has ordinary USB-C data-and-charging sockets on top of its single TB branch, which helps when the monitors are already on HDMI. For some shared desks, where a phone or tablet joins the fixed equipment each evening, that makes UDH2 the better fit. What matters is which sockets are left once the permanent devices are plugged in. A data-only USB-C port works for an accessory, but it cannot stand in for a missing video-capable TB branch.
How we worked this out
Three fixed branches use up all three of UDT3’s TB ports, while UDH2 has extra ordinary USB-C data ports. It is not assumed that every accessory needs USB-C, and a suitable A-to-C data cable is listed as an alternative.
Option A
Plugable, TBT-UDH2
Plugable TBT-UDH2
Your two HDMI screens should keep their current cables, with a TB port left over for a compatible drive.
- Best for
- Your two HDMI screens should keep their current cables, with a TB port left over for a compatible drive.
Facts we checked
- HDMI monitors: Two direct HDMI 2.1 outputs
- TB or USB-C display branches: One downstream TB5 port
- Downstream video-port power: Up to 30W from the single downstream TB port
- Host charging and network: Up to 140W host and 2.5GbE
Option B
Plugable, TBT-UDT3
Plugable TBT-UDT3
A TB drive and two USB-C or Thunderbolt displays call for three direct branches, and your host has to support the screens.
- Best for
- A TB drive and two USB-C or Thunderbolt displays call for three direct branches, and your host has to support the screens.
Facts we checked
- HDMI monitors: No fixed HDMI, use compatible TB video adapters
- TB or USB-C display branches: Three downstream TB5 ports
- Downstream video-port power: Up to 15W from each downstream TB port
- Host charging and network: Up to 140W host and 2.5GbE
Spec by spec
Where they really differ
| Spec | Plugable TBT-UDH2 | Plugable TBT-UDT3 | In practice |
|---|---|---|---|
| HDMI monitors | Two direct HDMI 2.1 outputs | No fixed HDMI, use compatible TB video adapters | Existing HDMI cables suit UDH2’s layout. |
| TB or USB-C display branches | One downstream TB5 port | Three downstream TB5 ports | Two USB-C screens and a drive map straight onto UDT3’s branches. |
| Downstream video-port power | Up to 30W from the single downstream TB port | Up to 15W from each downstream TB port | What a portable display needs in power can overturn a choice made on connectors alone. |
| Host charging and network | Up to 140W host and 2.5GbE | Up to 140W host and 2.5GbE | Both docks share these headline features, and your actual laptop and network set the limits. |
| Ordinary USB-C sockets | Dedicated data-and-charging USB-C sockets | USB-C accessory connections use the three downstream TB ports | On UDT3, a phone or other USB-C device can end up taking a branch that was meant for a screen or drive. |
Trade-offs
What each pick costs you
With Plugable TBT-UDH2
- For two USB-C-only screens you need a verified alternate way to connect them. An HDMI-to-USB-C cable should not be assumed to work in the direction required.
With Plugable TBT-UDT3
- Two HDMI screens may call for two compatible adapters or video cables bought separately. Host and display-mode limits still apply.
Change of plan
When the answer changes
The desk is defined by its HDMI cables and its separately plugged USB-C accessories
Go with Plugable TBT-UDH2. UDH2’s fixed outputs leave its accessory connections free.
Direct branches are needed for two USB-C displays and TB storage
Go with Plugable TBT-UDT3. UDT3 offers three branches and does not rely on reverse video adapters.
Decision guide
Before you buy
Your current screens and drive should keep working, and you should not end up buying adapters because the spare port is the wrong kind.
What this page can’t tell you
- A third screen or full bandwidth is not guaranteed in every case. Neither dock gets around native host limits, and neither is assumed to be a hardware KVM. The direction and capability of the USB-C cable need to suit what you are doing.
By the numbers
What the data shows
What we found across the docking stations we compare, plus the checked facts behind each finding.
Show the facts and the math
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Plugable TBT-UDH2 |
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| Plugable TBT-UDT3 |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
Plugable TBT-UDH2
Your two HDMI screens should keep their current cables, with a TB port left over for a compatible drive.
A compatible accessory wants more than 15W from the video-capable TB port, and the UDH2 supports up to 30W there. Check the exact power profile.
See price & reviews on AmazonPlugable TBT-UDT3
A TB drive and two USB-C or Thunderbolt displays call for three direct branches, and your host has to support the screens.
You like the flexibility of TB connections and are fine buying separate HDMI or DP adapters for any monitor that needs one.
See price & reviews on AmazonEach link opens in a new tab.
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