In-depth review
CalDigit TS4 Review (2026)
An in-depth look at the CalDigit TS4 Thunderbolt 4 dock: 18 ports, 98W charging, and whether it earns its premium price.
CalDigit TS4 Thunderbolt 4 Dock
The 18-port Thunderbolt dock that does everything.
Our verdict
The CalDigit TS4 is the most complete single-cable dock we have researched. If your workflow involves dual monitors, fast external storage, and a laptop that charges over USB-C, it consolidates everything into one Thunderbolt connection with room to spare. The price is serious, and it is wasted on non-Thunderbolt machines, but for its target user there is no cleaner desk solution.
What we like
- 18 ports covering nearly every connection type
- 98W host charging powers most laptops
- 2.5Gb ethernet and fast SD card readers
What to watch out for
- Requires a Thunderbolt port to reach full potential
- Large and priced for serious setups
- Overkill for basic peripheral expansion
Who it is for
Professionals with Thunderbolt laptops who want dual displays, fast storage, and charging over one cable.
Design and connectivity
The TS4 packs 18 ports into a compact aluminum chassis: multiple Thunderbolt 4 ports, USB-A and USB-C at various speeds, DisplayPort, 2.5Gb ethernet, audio in and out, and both SD and microSD readers. The front-facing ports handle daily plug-and-play devices while the rear hosts permanent desk connections. Build quality is a clear step above plastic hubs, with a reassuring weight that keeps it planted.
Performance in real setups
With 98W of host charging, the TS4 powers nearly every ultrabook and most 16-inch laptops at full speed while driving dual 4K displays. The 2.5Gb ethernet is a meaningful upgrade for anyone moving large files on a wired network, and the card readers run at UHS-II speeds. Thermal performance is well managed for a dock this dense; it runs warm under load but owner reports of disconnects are rare.
Value and who should skip it
This is a premium dock at a premium price, and its value depends entirely on using its capabilities. Paired with a Thunderbolt laptop driving two monitors, it replaces a tangle of adapters and chargers with one cable. Without Thunderbolt, or with a single-monitor setup, much of its advantage evaporates and a simpler dock saves significant money.
What owners report
Commonly praised
- A huge range of ports from a single Thunderbolt cable
- Strong laptop charging and solid build
- Firmware updates have fixed several early display issues
Common complaints
- Some owners report the Ethernet port dropping out, especially after OS updates
- Occasional disconnects of drives or displays that need a replug or reboot
- It is expensive compared with simpler docks
Recurring themes from owner reviews on retailers and forums, summarised by our editors. Updated October 2026.
Key specifications
- Ports
- 18 total
- Host charging
- 98W
- Display support
- Dual 4K or single 8K
- Ethernet
- 2.5 Gigabit
- Connection
- Thunderbolt 4
Also consider
Anker 10-Port USB 3.0 Hub
Ten powered ports for peripheral-heavy desks.
- Ports: 10x USB-A 3.0
- Speed: 5 Gbps per port
Ugreen USB-C Hub 6-in-1
Travel-friendly ports with 4K HDMI.
- Ports: 6-in-1
- Video: 4K HDMI at 30Hz
Research-based assessment. ThePickLedger has not hands-on tested this product; this evaluation synthesizes manufacturer specifications, retailer documentation, and published expert reviews.
Questions, answered
Does the TS4 work without Thunderbolt?
It functions as a USB-C dock on non-Thunderbolt ports, but display support and bandwidth drop significantly. It is designed for Thunderbolt hosts.
Can it charge a 16-inch laptop?
Yes, 98W covers most 16-inch laptops including performance models, though some workstation-class machines may charge slightly slower than with their stock brick.
Is it worth it for a single monitor?
Probably not. A simpler USB-C dock handles one display and charging for much less. The TS4 earns its price with dual displays and heavy peripheral loads.