CalDigit TS4 vs Kensington SD5780T - Thunderbolt 4 Dock Comparison 2026

CalDigit TS4 vs Kensington SD5780T: Two of the Best Thunderbolt 4 Docks Go Head to Head

When you narrow a Thunderbolt 4 dock search to the premium end of the market, two names come up most often: the CalDigit TS4 and the Kensington SD5780T. Both use the same 40 Gbps Thunderbolt 4 host connection, both deliver around 96-98W of laptop charging, and both include 2.5 Gbps Ethernet. They sit within $20 of each other at MSRP. On the surface they look almost identical - but the differences in design philosophy run deeper than a spec sheet comparison suggests.

The short verdict: The CalDigit TS4 wins for most buyers. It scores 9.2 vs the Kensington SD5780T’s 8.0, and the port count difference (18 vs 11) drives that gap. The SD5780T earns its place as the better choice for enterprise buyers, HDMI monitor users, or anyone who values Kensington’s security hardware and 3-year warranty.

If you are still figuring out whether Thunderbolt 4 is right for your setup, our docking station buying guide is a good starting point.

Quick Specs Comparison

Design and Build Quality

Both docks use aluminum chassis and share a similar footprint, but the design priorities are different.

CalDigit TS4

The TS4 features a full aluminum enclosure that serves as a passive heat sink - no fans, no noise. The anodized finish and clean port layout have made it a consistent favorite among Mac users who want hardware that fits the aesthetic of an Apple setup. Ports are well-organized across front and rear panels: the frequently used USB-A ports, card readers, and audio jacks are front-facing, while the host connection, video output, Ethernet, and additional USB ports are on the rear. CalDigit includes a 0.8m Thunderbolt 4 cable, which some users find slightly short for deeper desk setups.

Kensington SD5780T

The SD5780T has a brushed aluminum chassis with a more corporate aesthetic. Its defining physical features are the dual Kensington lock slots on the rear - one standard K-slot and one Nano lock slot - making it one of the most secure docking stations available for shared office environments. At 1m, the included host cable is slightly longer than the TS4’s 0.8m offering, which is a practical advantage for desk configurations where the laptop sits at some distance from the dock. The 180W external power brick is notably larger than the TS4’s power supply, which may affect cable management.

Design winner: Tie. The CalDigit TS4 wins on premium feel and thermal elegance; the Kensington SD5780T wins on physical security hardware and cable length. Both are solid.

Port Comparison

This is the area where the two docks diverge most sharply.

USB Connectivity

The CalDigit TS4 offers three Thunderbolt 4 downstream ports (40 Gbps, 15W each), three USB-C 3.2 Gen 2 ports (7.5W each), and five USB-A 3.2 Gen 2 ports (7.5W each). That is 11 USB connections total, and the triple Thunderbolt downstream capability lets you daisy-chain Thunderbolt NVMe drives, additional docks, or connect Thunderbolt peripherals without an adapter.

The Kensington SD5780T provides two USB-C 4.0 downstream ports (15W each) and four USB-A 3.2 Gen 2 ports (one at 7.5W, three at 4.5W). That is 6 USB connections total. For a clean desk with a keyboard, mouse, webcam, and one storage drive, the SD5780T has enough ports. Power users with more peripherals will start running low.

Video Outputs

The Kensington SD5780T has a direct HDMI 2.1 port supporting 4K@120Hz for a single display or 4K@60Hz as part of a dual-display setup. This is a genuine convenience advantage - any HDMI monitor plugs in without adapters. The two downstream TB4 ports handle the second display and any additional high-speed peripherals.

The CalDigit TS4 offers one DisplayPort 1.4 output plus video capability through its three Thunderbolt 4 downstream ports. Most modern monitors support DisplayPort natively, but if your monitors are HDMI-only, you will need a DP-to-HDMI adapter. Both docks reach the same dual 4K@60Hz maximum resolution.

The Kensington SD5780T also supports dual 6K@60Hz on MacBook Pro models with M-series Pro or Max chips when monitors support DSC 1.2 and DP 1.4 HBR3 - a spec the CalDigit TS4 does not match.

Networking

Both docks include 2.5 Gigabit Ethernet - a genuine differentiator at this price point. Many competing docks in the same tier still use 1 Gbps Ethernet. If you transfer large files on a local network or connect to a NAS, the 2.5 Gbps connection on either dock is a meaningful upgrade.

Card Readers and Audio

The CalDigit TS4 includes both SD and microSD UHS-II card readers running at up to 312 MB/s each, plus a 3.5mm combo jack, a dedicated headphone output, and a dedicated microphone input - three separate audio connections.

The Kensington SD5780T has a single UHS-II SD 4.0 card reader (no microSD slot) and a single 3.5mm combo audio jack. If you regularly work with microSD cards from cameras or drones, you will need a USB-A adapter with the Kensington.

Port winner: CalDigit TS4. More USB ports (11 vs 6), three TB4 downstream connections vs two, both SD and microSD card readers vs SD only, and richer audio options. The Kensington’s HDMI output and 6K display support are the only port-related categories where it pulls ahead.

Display Support

Both docks support dual 4K@60Hz as their standard dual-display configuration. On Mac, both require M1 Pro/Max or later for two external monitors - base M1/M2/M3 Apple Silicon supports only one external display, regardless of the dock.

The Kensington SD5780T adds dual 6K@60Hz support on MacBook Pro models with M-series Pro or Max chips when paired with monitors that support DSC 1.2 and DP 1.4 HBR3. It also achieves 4K@120Hz on a single display via its HDMI 2.1 port, which the CalDigit TS4 cannot match natively.

The CalDigit TS4 supports 8K@30Hz on a single display on Windows, and dual displays via its Thunderbolt downstream ports are more flexibly routed for users with multiple Thunderbolt peripherals.

For users running two 6K Apple Pro Display XDRs or similar high-resolution monitors, the Kensington SD5780T is the better option here.

Display winner: Kensington SD5780T (narrowly) - for the 6K@60Hz dual capability on Apple Pro/Max chips and native HDMI 2.1. For standard dual 4K@60Hz setups, they are equal.

Power Delivery

The CalDigit TS4 delivers 98W of USB-C Power Delivery to any compatible laptop. The Kensington SD5780T delivers 96W. Both use standard USB-C PD - no proprietary charging technology. Both comfortably charge a 16-inch MacBook Pro during normal use, and both handle most Windows ultrabooks and workstation laptops.

The 2W difference is not meaningful in practice. If you are charging a power-hungry workstation laptop and need maximum wattage, both docks perform identically for everyday tasks.

Power delivery winner: Tie. 98W vs 96W is a specification difference, not a real-world performance difference.

Pricing and Value

At MSRP, the CalDigit TS4 at $379.99 is actually $20 cheaper than the Kensington SD5780T at $399.99 - though both regularly go on sale. The TS4 frequently drops to $299-329 on Amazon; the SD5780T has been found at $299-350.

On a per-port basis, the TS4 delivers 18 ports for $379.99 (roughly $21 per port). The SD5780T offers 11 ports for $399.99 (roughly $36 per port). The TS4 also includes extras - dual card readers, triple audio jacks - that would add $30-50 in USB adapters if purchased separately for the Kensington.

The Kensington SD5780T commands a premium through its enterprise features: 3-year warranty (vs 2 years), dual Kensington lock slots, TAA compliance, and optional DockWorks software. These are real differentiators for IT procurement - but they add zero value for a home office or solo creative setup.

Also worth considering: how these compare to the mid-range tier. See our CalDigit TS4 vs OWC Thunderbolt 4 Dock comparison for context on what you give up by stepping down in price.

Value winner: CalDigit TS4 for consumers and creative professionals. Kensington SD5780T for enterprise buyers who need the warranty, lock slots, and TAA compliance.

macOS and Windows Compatibility

Both docks require no drivers and work plug-and-play on macOS 11 or later and Windows 10 or later.

The CalDigit TS4 is widely regarded as the premier Mac dock - CalDigit ships firmware updates ahead of Apple hardware launches to ensure day-one compatibility, and a dedicated macOS firmware update utility is available. CalDigit’s track record here is unmatched.

The Kensington SD5780T performs well on macOS but Kensington’s firmware update cadence is less aggressive than CalDigit’s. Optional DockWorks software adds enterprise networking features - MAC address passthrough and automatic WiFi disabling when Ethernet is active - primarily useful for corporate IT environments. PCWorld’s independent testing confirmed solid stability with nearly no dropped frames during sustained 4K streaming and smooth simultaneous data transfers.

Both docks handle AMD Ryzen and Intel-based Windows laptops well, with one caveat: the Kensington SD5780T has a known occasional issue on certain AMD Ryzen laptops where a second monitor connected through a TB4 downstream port via a USB-C to DisplayPort adapter does not output a signal. Switching to a monitor with a native USB-C/Thunderbolt input resolves this.

Compatibility winner: CalDigit TS4 for Mac users. Kensington SD5780T for enterprise Windows environments with managed networks.

Verdict: CalDigit TS4 Wins for Most Users

The CalDigit TS4 is the better Thunderbolt 4 dock for the majority of buyers. Its 18-port arsenal, superior card reader setup, richer audio options, and unmatched Mac firmware support make it the more complete docking solution. For home users, creative professionals, and mixed Mac/Windows setups, nothing in this price range beats it.

The Kensington SD5780T earns its place as the right dock for specific use cases: enterprise deployments that need security lock slots and TAA compliance, users running 6K displays on Apple Pro/Max chips, and anyone with exclusively HDMI monitors who wants zero-adapter connectivity.

Choose the CalDigit TS4 if:

• You want the most ports and features in a single dock
• You are a Mac user who values day-one firmware compatibility
• You need both SD and microSD card readers
• You use DisplayPort monitors or are willing to use a DP-to-HDMI adapter
• You do not need physical security lock slots
• You want the best overall value at this price point

Choose the Kensington SD5780T if:

• You work in a managed enterprise environment needing security locks and TAA compliance
• You run a MacBook Pro with M-series Pro or Max and want dual 6K@60Hz support
• Your monitors use HDMI and you want direct connection without adapters
• The 3-year warranty is a meaningful factor for your purchase decision
• DockWorks enterprise network features (MAC address passthrough) are relevant to your IT setup

For full details on each dock, read our CalDigit TS4 review and Kensington SD5780T review. Our homepage covers the complete ranking of every docking station we test.