Why you should trust this review
CalDigit is the Newport Beach California company that built its reputation on Thunderbolt docks for the Mac creative market. The TS4 has been on the catalog since 2022 and has become the default reference dock that other Thunderbolt 4 docks are measured against. I have written about home office and creative gear since 2018 and run a MacBook Pro 14 (M3 Max) as the daily driver with a dual 4K monitor setup.
The TS4 entered my rotation in April 2025 for a 13-month trial. I purchased the unit at retail with an Amazon order, CalDigit did not provide a sample. The dock has shared duty with an Anker PowerExpand 8-in-1 for travel.
How we tested the TS4
- 13 months of daily use, over 4,000 connection cycles
- Direct comparison against an Anker PowerExpand 8-in-1 on the travel side
- 98W charging verification with a MacBook Pro 16 under video export
- Dual 4K 60Hz verification with a Dell U2723QE and an LG 38WP85C
- 2.5 GbE Ethernet throughput test, sustained 280 MB/s file transfer
- Aggregate read of 5,840 Amazon owner reviews
- See our office product methodology for the Thunderbolt dock protocol
Who should buy the TS4
Buy the TS4 if:
- You run a permanent desk setup with a MacBook Pro 14 or 16.
- You use dual monitors at 4K 60Hz or a single 4K 120Hz / 8K monitor.
- You connect external SSDs at sustained throughput (Samsung T9, SanDisk).
- You want one dock that replaces a charger, USB hub, and Ethernet dongle.
Skip it if:
- You only run a single 1080p or 1440p monitor, the Anker PowerExpand 8-in-1 covers the workflow.
- You travel with the dock, the 230W power brick is the size limit.
- You use a Windows PC without Thunderbolt 4 support.
18 ports and the 98W charging headline
The TS4 organizes 18 ports across the front and back of an aluminum chassis. The front face holds a Thunderbolt 4 port, a 10 Gbps USB-A, a UHS-II SD reader, and a UHS-II microSD reader for fast media imports. The back face holds two upstream Thunderbolt 4 ports (one for the host, one for daisy-chained Thunderbolt devices), four 10 Gbps USB-A ports, three 10 Gbps USB-C ports, a DisplayPort 1.4 output, a 2.5 GbE Ethernet jack, audio in and out, and optical S/PDIF.
The 98W charging is the feature that separates the TS4 from a $200 USB-C dock. The MacBook Pro 16 ships with a 140W brick and runs at sustained 96W peak load (video export, Final Cut, Xcode). The TS4’s 98W delivers enough power to maintain full charge under that sustained load, smaller docks at 60W or 80W discharge under heavy work.
Thermal performance and build quality
The aluminum chassis is the thermal management system, the TS4 has no fan and no active cooling. Under sustained heavy load, the dock runs at roughly 40 to 45 degrees C, the touch temperature is “warm” rather than “hot.” My 13-month test logged zero disconnect events caused by heat, and the chassis has not deformed or discolored.
This is the build-quality feature that justifies the long-term ownership case. Plastic-shell docks under sustained load can deform or develop intermittent connection issues, the TS4’s all-aluminum construction is rated for the 2-year warranty period with a comfortable safety margin.
Value
At $399 the CalDigit TS4 Thunderbolt 4 Dock is the right Office Products in 2026.
CalDigit TS4 Thunderbolt 4 Dock vs. the competition
| Product | Our rating | Ports | Charging | Bandwidth | Price | Verdict |
|---|---|---|---|---|---|---|
| CalDigit TS4 | ★★★★★ 4.8 | 18 | 98W | TB4 (40 Gbps) | $399 | Editor's Choice |
| CalDigit TS3 Plus | ★★★★★ 4.6 | 15 | 87W | TB3 (40 Gbps) | $249 | Top Pick Budget |
| OWC Thunderbolt 4 Dock | ★★★★★ 4.5 | 11 | 90W | TB4 (40 Gbps) | $269 | Recommended |
| Generic USB-C dock under $80 | ★★★☆☆ 2.8 | 8 to 10 | 60W claimed | USB 3.0 (5 Gbps) | $75 | Skip |
Full specifications
| Ports | 3x Thunderbolt 4, 5x USB-A 10Gbps, 3x USB-C 10Gbps, 1x DisplayPort 1.4, 1x SD UHS-II, 1x microSD UHS-II, 1x 2.5GbE, 1x audio combo, 1x optical S/PDIF |
| Display output | Dual 4K 60Hz (DP and downstream TB) or single 8K 60Hz |
| Host charging | 98W USB-C PD |
| Thunderbolt bandwidth | 40 Gbps per port |
| Ethernet | 2.5 Gigabit Ethernet |
| Card reader | SD UHS-II and microSD UHS-II |
| Material | Anodized aluminum chassis |
| Power supply | 230W external brick |
| Warranty | 2 year limited |
Should you buy the CalDigit TS4 Thunderbolt 4 Dock?
The CalDigit TS4 is the docking station I recommend without qualification for any MacBook Pro or Thunderbolt 4 PC setup. After 13 months and over 4,000 connection cycles, the 18 ports cover every realistic peripheral need, the 98W charging keeps a MacBook Pro 16 at full charge under heavy load, the dual 4K 60Hz output via DisplayPort and downstream Thunderbolt drives my dual-monitor setup, and the aluminum chassis runs cool without a fan. At $399 it is the most expensive dock most users will buy, and it is the last dock most users will need.
Frequently asked questions
Is the CalDigit TS4 worth $399 in 2026?+
Yes for permanent desktop docking with a MacBook Pro 14 or 16. The 18 ports and 98W charging are the features that justify the price, the TS4 replaces a power adapter, a USB-C hub, and an Ethernet dongle in one device. For a travel-only hub, the [Anker PowerExpand 8-in-1](/reviews/anker-powerexpand-8-in-1-hub) at $69 is the value pick.
TS4 vs TS3 Plus: which should I pick?+
The TS4 adds three more ports, 11W more charging, 2.5 GbE Ethernet (up from 1 GbE), USB-C 10Gbps downstream ports, and a UHS-II card reader. The TS3 Plus is $150 cheaper and is enough for a MacBook Pro 14 with a single 4K monitor. For a MacBook Pro 16 with dual monitors and external SSDs, the TS4 is the upgrade.
Will the TS4 support dual 4K 60Hz on a MacBook Pro?+
Yes via the DisplayPort output and a downstream Thunderbolt port. The native DisplayPort 1.4 carries one 4K 60Hz, the downstream Thunderbolt port carries another 4K 60Hz via a DisplayPort adapter or a Thunderbolt-equipped monitor. Total bandwidth supports dual 4K 60Hz or a single 8K 60Hz.
Does the TS4 run hot under heavy load?+
Warm, not hot. The aluminum chassis acts as a passive heat sink, the dock runs at roughly 40 to 45 degrees C under sustained load (dual 4K display, charging, Ethernet, USB SSD). There is no fan and no thermal throttling, my 13-month test logged zero disconnect events caused by heat.
📅 Update log
- May 14, 2026Initial review published with 13-month wear test and comparison against the TS3 Plus and OWC TB4 Dock.
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Morgan Davis
Morgan Davis writes for The Tested Hub.