CalDigit TS4 Thunderbolt 4 Dock
The most port-dense Thunderbolt 4 dock available — 18 ports, 98W laptop charging, and enough bandwidth to handle dual 6K displays without breaking a sweat.
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What we like
- 18 ports including 3x Thunderbolt 4, 5x USB-A, 3x USB-C, and SD card reader
- 98W laptop charging — highest of any TB4 dock
- 2.5GbE ethernet for fast wired networking
- Supports single 8K or dual 6K 60Hz displays
- Solid aluminum build with included 0.8m certified cable
Could be better
- Expensive at $379 — a real investment
- Large footprint; best oriented vertically to save desk space
- Full display potential requires Thunderbolt host — limited with USB-C only machines
Full Review
The CalDigit TS4 is the dock that serious Mac and PC power users keep buying year after year. At $380 it’s not cheap, but there’s nothing else on the market that packs this many ports into a single Thunderbolt 4 connection — and actually delivers on the bandwidth promises.
Port Selection and Build Quality
Eighteen ports sounds like marketing fluff until you count them: 3x Thunderbolt 4, 5x USB-A, 3x USB-C, 2.5GbE, UHS-II SD card reader, 3.5mm headphone and microphone jacks, and a Kensington lock slot. The aluminum chassis feels premium and runs warm under load — that’s normal for a dock pushing this much throughput. It ships with an 0.8m certified Thunderbolt 4 cable, which is a nice touch since those cables aren’t cheap separately.
Display and Data Performance
The headline spec is dual 6K @ 60Hz support (or single 8K if you’re running one monster display). On Apple Silicon Macs, this works exactly as advertised through a single cable. For data, the three Thunderbolt 4 ports each run at 40Gb/s, so daisy-chaining external SSDs, capture cards, or additional hubs doesn’t bottleneck the way it would on cheaper USB-C docks. The 2.5GbE port is genuinely useful if your router supports it — real-world throughput noticeably beats standard gigabit.
Charging and Power Delivery
98W of laptop charging is the highest you’ll find on any Thunderbolt 4 dock. That’s enough to charge a 16-inch MacBook Pro at full speed, including under sustained CPU/GPU load. If you’re running a power-hungry machine and want to keep it topped off without a second charger on your desk, the TS4 is one of the few docks that can actually do it.
Who Should Buy This
The TS4 is the right call if you need a single-cable setup for a high-end laptop and genuinely use most of what it offers — dual monitors, fast external storage, wired ethernet, and full-speed charging simultaneously. If you only need a couple of USB ports and HDMI, save $200 and grab a simpler hub. But if your desk has turned into a cable management problem, the TS4 untangles it in one shot.
