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Review

CalDigit TS4 Thunderbolt Station Review: A Powered Dock for One Desk

A powered Thunderbolt 4 dock with 18 ports, 98 W of laptop charging and 2.5 GbE Ethernet, reviewed from the recorded specifications rather than from a.

Published Oct 22, 2026Last reviewed Oct 22, 2026USB-C Hubs and Docks

CalDigit TS4 Thunderbolt Station

A Thunderbolt 4 dock with a large port selection, high-wattage laptop charging and support for multiple displays.

Full product research

The CalDigit TS4 Thunderbolt Station is a Thunderbolt 4 dock with a large port selection, high-wattage laptop charging and support for multiple displays. It is the permanent desk answer: a powered box that stays plugged in, with a laptop that arrives and leaves.

This review is built from the specifications recorded against the product, each carrying its source and a verification state that is currently partial. We have not handled this dock, so nothing here claims a transfer rate in practice, a fan noise level or a measured display output. The recorded protocol, port count, charging figure, Ethernet speed and power source are what this page works through.

Thunderbolt 4 sets the ceiling

The recorded protocol is Thunderbolt 4, and that single line decides which laptops the dock can serve at full capability. The recorded data does not describe what a host without a Thunderbolt 4 connection can use, so a buyer with an ordinary USB-C port should check before buying. Nothing else on the spec sheet matters as much as this one, because the alternative to Thunderbolt 4 is a laptop with fewer ports than the desk needs.

Eighteen ports

The recorded port count is 18 ports, against the 8-in-1 of the bus-powered Anker 555. The recorded feature list adds wired Ethernet, multiple display support and powered dock status, and the recorded description calls out a large port selection.

Port count on its own is a poor measure of usefulness, because a dock with eighteen ports still sends display and storage traffic down one link. What the count does guarantee is that a desk rarely runs out of places to plug in.

Charging and power

Laptop charging is recorded as up to 98 W, and the power source is recorded as an external power supply. Those two lines work together and give the dock its clearest advantage over the portable hub: the 85 W pass-through ceiling recorded for the Anker 555 is limited by what the host can spare, while an external supply removes that competition entirely.

The cost of the external supply is that the dock is a fixed object. It lives on the desk, it needs a socket, and it does not travel with the laptop.

Network and displays

Ethernet is recorded as 2.5 GbE, which is more than double the 1 GbE recorded for the Anker 555 and matters when files move across the network. Multiple display support is recorded as a feature and the recorded description notes support for multiple displays, although no specific display resolution or refresh rate figure is recorded for this dock.

Who this is for

The TS4 suits someone with one desk and one demanding laptop who wants many ports, fast wired networking and full-speed charging from one box. It is a poor fit for a laptop that travels daily, or for a machine without a Thunderbolt 4 port.

Where the alternative sits

The Anker 555 USB-C Hub is the alternative, and it is a good one for a different job: 8-in-1, bus-powered, with a recorded HDMI output of up to 4K at 30 Hz, 1 GbE Ethernet, SD and microSD readers and 85 W of pass-through input. The TS4 wins on ports, charging and network speed, while the Anker wins on portability, because it is the one of the two that travels.

Methodology

Selection criteria

How the products below were evaluated and chosen.

  • What we checked

    The protocol, because it decides which hosts can use the dock at full capability, the port count, how the dock is powered, the charging figure and the network speed. Each value comes from the recorded specification and carries its source and verification state.

Products

Products covered

USB-C Hubs and Docks

Anker 555 USB-C Hub

Why it is here: A bus-powered 8-in-1 hub with a recorded 4K at 30 Hz HDMI output, 1 GbE Ethernet and 85 W of pass-through. It travels with the laptop, where the TS4 stays on the desk.

Port count: 8-in-1

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CalDigit TS4 Thunderbolt Station

Why it is here: The subject of this review. Its recorded Thunderbolt 4 protocol, 18 port count, up to 98 W of laptop charging and external power supply make it the dock to consider for a permanent desk.

Protocol: Thunderbolt 4

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Trade-offs

Strengths and limitations

Published per product so you can see which side of the comparison each point belongs to.

CalDigit TS4 Thunderbolt Station

Advantages

  • Eighteen ports on one desk:The recorded port count is 18 ports, against the 8-in-1 recorded for the Anker 555. Multiple display support, wired Ethernet and powered dock status all appear in the recorded feature list.
  • Charging that does not compete with the hub:Laptop charging is recorded as up to 98 W and the power source is recorded as an external power supply. The dock is powered from the wall rather than from the laptop, so the ports and the charging do not compete for the same budget.
  • 2.5 GbE and Thunderbolt 4:Ethernet is recorded as 2.5 GbE and the protocol as Thunderbolt 4. Together they are the reason a large file transfer over the network, or a busy desk, is handled by the dock rather than by a pile of adapters.

Limitations

  • It needs a socket and it needs Thunderbolt 4:The recorded power source is an external power supply and the recorded protocol is Thunderbolt 4. The dock therefore stays where it is plugged in, and a host without a Thunderbolt 4 port will only see part of what the 18 ports offer.
  • No recorded display resolution and no card reader:Multiple display support is recorded as a feature, but no display resolution or refresh rate figure is recorded for this dock, and no card reader appears in the recorded feature list. A buyer who needs 4K at a specific refresh rate, or reads camera cards, has to look elsewhere.

Fit

Who should choose what

Each product is matched to the reader who should pick it, and to the reader who should not.

CalDigit TS4 Thunderbolt Station

Choose it if

  • People with one desk and one demanding laptop:The recorded 98 W of charging, 18 ports and 2.5 GbE Ethernet suit a desk that stays set up, with a laptop that comes and goes and has to charge at full speed while it is plugged in.

Look elsewhere if

  • People whose laptop travels every day:The recorded external power supply and the fixed 18 port design make this a desk fixture. If the dock has to go in the bag, the recorded audience for a portable bus-powered hub fits the job better.

FAQ

Frequently asked questions

What protocol does the CalDigit TS4 use?

The recorded protocol is Thunderbolt 4. The recorded data does not describe what a host without a Thunderbolt 4 connection can use, so a buyer with an ordinary USB-C port should check before buying.

Source:CalDigit official site

How many ports does the CalDigit TS4 have?

The recorded port count is 18 ports, which is the largest selection recorded for a dock in this catalogue. The Anker 555 USB-C Hub records 8-in-1 by comparison.

Source:CalDigit official site

How much laptop charging does the CalDigit TS4 provide?

Laptop charging is recorded as up to 98 W. The Anker 555 records up to 85 W of pass-through input, and the difference comes from the dock drawing its power from an external supply.

Source:CalDigit official site

What Ethernet speed does the CalDigit TS4 support?

Ethernet is recorded as 2.5 GbE, and wired Ethernet appears in the recorded feature list. The Anker 555 records 1 GbE.

Source:CalDigit official site

Does the CalDigit TS4 need its own power supply?

Yes. The recorded power source is an external power supply, which is why the dock can deliver up to 98 W of laptop charging and why it stays on the desk rather than travelling with the laptop.

Source:CalDigit official site

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