CalDigit
CalDigit TS4 18 Port Thunderbolt 4 Dock
Bottom line: The CalDigit TS4 18 Port Thunderbolt 4 Dock ($379.99 on Amazon as of 2026-10-21 16:24 UTC): 18 ports total, including 3x Thunderbolt 4 at 40Gb/s; main trade-off: M1-M3 non-Pro Macs are capped at a single display by the host.
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*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
Pros & Cons
Pros
- ✓ 18 ports total, including 3x Thunderbolt 4 at 40Gb/s
- ✓ 98W power delivery charges large-screen laptops over one cable
- ✓ All 8 USB ports run full 10Gb/s, not shared low-speed lanes
- ✓ 2.5GbE LAN is 2.5x gigabit speed for NAS and fast routers
- ✓ SD and microSD 4.0 UHS-II readers plus DisplayPort 1.4 built in
Cons
- ✗ M1-M3 non-Pro Macs are capped at a single display by the host
- ✗ Requires Thunderbolt 4 or full USB4 host for advertised speeds
- ✗ Needs the supplied or an Intel-certified cable to hit full spec
Manufacturer description
The CalDigit TS4 Thunderbolt 4 dock turns a single cable into an 18-port workstation hub, and it is built for people who have outgrown a three-port travel adapter. You get 3x Thunderbolt 4 ports at 40Gb/s, 8x USB ports (3x USB-C and 5x USB-A) all running at full 10Gb/s, a built-in DisplayPort 1.4 connector, SD and microSD 4.0 UHS-II card readers, 3x audio ports, a 2.5GbE LAN port, and a security slot. The 98W power delivery is the part that matters for large-screen laptops: one cable charges the machine while driving the entire port bank, so your desk collapses to a single connection…
SpecPicks Verdict
SpecPicks scored CalDigit TS4 18 Port Thunderbolt 4 Dock using a rating × review-volume × price-fit model applied to published specs and reviews across the external storage category. CalDigit's external storage lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for external storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
Will the CalDigit TS4 charge my laptop while everything else is connected?
Yes. The TS4 delivers 98W of power, enough for larger-screen laptops, and CalDigit states a single cable charges your laptop while connecting all 18 devices at once.
How many monitors can I run on a Mac with the TS4?
It depends on your Mac. M1 through M4 Pro, M Max, and M Ultra machines can drive dual 6K 60Hz displays. M1 to M3 non-Pro Macs are limited to a single display due to host hardware limits, and macOS tops out at a single 6K 60Hz display.
Does the TS4 work with Windows PCs and Chromebooks, or is it Mac-only?
It works with Thunderbolt 4, Thunderbolt 3, USB4, and USB-C computers across Apple M1 to M4 silicon, Windows PCs, and Chrome OS. Windows users can drive a single 8K display or dual 4K 60Hz. The USB-C port must support data, video, and power.
Are all the USB ports on the TS4 full speed?
Yes. All 8 USB ports, 3x USB-C and 5x USB-A, run at 10Gb/s. The three Thunderbolt 4 ports run at 40Gb/s.
Do I have to use the included cable?
Yes, for full performance. CalDigit specifies the supplied 0.8m certified cable or an Intel-certified aftermarket Thunderbolt or USB4 cable. Connecting through Thunderbolt 3 or plain USB-C hosts caps throughput at that host interface's limit.
Key Features
- 18 Ports of Extreme Connectivity - Featuring an impressive 18 ports, the TS4 has enough connectivity for even the most demanding of workflows. This includes a built-in DisplayPort 1.4 connector, a total of 8x USB ports with full 10Gb/s performance, SD & microSD 4.0 UHS-II Card Readers, 3x Thunderbolt 4 (40Gb/s) ports, 3x Audio ports, 2.5GbE, and a security slot.
- Powerful 98W Charging - The TS4’s power delivery is ideal for any Thunderbolt or USB-C (with data, video, and power support) host device, including larger screen laptops that require more power. A single cable will charge your laptop and connect 18 devices at the same time.
- Single 8K or Dual 6K 60Hz Displays - Windows users can connect a single monitor up to 8K resolution. macOS users can connect a single display up to 6K 60Hz. For anyone looking to add dual displays, Windows users can connect up to dual 4K 60Hz monitors. Users on M1 - M4 Pro, M Ultra and Max can connect up to dual 6K 60Hz display. Users with M1 - M3 (Non Pro) Macs are limited to a single display only due to host hardware limitations.
- 2.5 Gigabit Ethernet - The TS4’s 2.5GbE port is 2.5X faster than standard 1GbE, allowing users to connect to faster networks, routers, and NAS devices. This powerful Ethernet port is fully backwards compatible with 1GbE devices. 2.5GbE performance requires a Thunderbolt host connection and 2.5GbE compatible devices or above.
- Universally Compatible - The TS4 works with Thunderbolt 4, Thunderbolt 3, USB4, and USB-C* computers, including Apple M1 - M4, M1 Pro - M4 Pro, M Max and M Ultra, Windows PCs, and Chrome OS devices. Also compatible with the USB-C iPhone 15 - 16 Pro, iPads and Windows tablets that feature Thunderbolt or USB-C. *USB-C port must support data, video, and power for basic functionality
- *The TS4 requires a Thunderbolt 4 or fully optioned USB4 port for maximum performance. When used with older or less powerful interfaces such as Thunderbolt 3, Thunderbolt 2, Thunderbolt 1, USB-C (with data, power, and video support), performance will be capped at the capability of the the host interface specifications **Must be used with supplied certified cable or an Intel Certfied aftermarket Thunderbolt / USB4 cable. More details can be found in the product requirements and specifications section below.
Full Specifications
| Brand | CalDigit |
|---|---|
| Color | Space Gray |
| Wattage | 230 |
| Unit Count | 1 Count |
| Connectivity | USB-C |
| Model Number | TS4-US 500971 |
| Compatibility | iOS, Mac |
| Input Voltage | 120 volts |
| Item Type Name | Thunderbolt 4 Docking Station |
| Mfr Part Number | TS4-US 500971 |
| Number of Ports | 18 |
| Total USB Ports | 3 |
| Total Usb Ports | 3 |
| Compatible Devices | MacBook Air, MacBook Pro |
| Hardware Interface | Thunderbolt, Thunderbolt 4, USB 3.0 Type C, USB 3.1 Type A, USB 3.1 Type C, USB 3.2 Gen 2×2, USB Type C |
| Warranty Description | 2 Year Manufacturer |
| Item Dimensions L x W x H | 4.46"L x 1.65"W x 5.55"H |
| Full listing title | CalDigit TS4 18 Port Thunderbolt 4 Dock, 98W Charging, 3X TBT4 (40Gb/s), 3X USB-C + 5X USB-A (10Gb/s), 2.5GbE LAN, 8K@30Hz or 2X 6K@60Hz Displays, Mac/Windows/Chrome, Space Gray, 0.8m Certified Cable |
Ready to buy?
CalDigit TS4 18 Port Thunderbolt 4 Dock, 98W Charging, 3X TBT4 (40Gb/s), 3X USB-C + 5X USB-A (10Gb/s), 2.5GbE LAN, 8K@30Hz or 2X 6K@60Hz Displays, Mac/Windows/Chrome, Space Gray, 0.8m Certified Cable is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
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