Dell WD22TB4 vs Kensington SD5780T - Thunderbolt 4 Dock Comparison 2026

Dell WD22TB4 vs Kensington SD5780T: Two Enterprise Thunderbolt 4 Docks Go Head-to-Head

The Dell WD22TB4 and Kensington SD5780T are both enterprise-oriented Thunderbolt 4 docking stations that target similar professional buyers - but they take meaningfully different approaches to the job. The Dell WD22TB4 leans into the Dell ecosystem with proprietary 130W ExpressCharge and a modular, upgradeable design. The Kensington SD5780T bets on a richer port set, faster 2.5 Gbps Ethernet, and enterprise features like Kensington lock slots and TAA compliance.

The short verdict: The Kensington SD5780T wins this matchup for most users, scoring 8.0/10 against the Dell WD22TB4’s 7.5/10. It delivers faster Ethernet, a native audio jack, a UHS-II card reader, and HDMI 2.1 output - all features the Dell WD22TB4 omits. The Dell only takes the lead if you specifically own a Dell business laptop and want 130W ExpressCharge.

For a broader look at where these docks fit in the overall market, check our docking station buying guide.

Quick Specs Comparison

Design and Build Quality

Both docks take a professional, understated approach - no flashy RGB, no consumer-oriented design choices.

Dell WD22TB4

The WD22TB4 has a compact plastic chassis measuring 8.1 x 3.5 x 1.1 inches. It is designed to sit horizontally on a corporate desk or fit into a Dell docking stand. The standout design feature is its modular Thunderbolt host module - the connectivity block is detachable, allowing Dell to release upgraded modules for future standards like Thunderbolt 5 without requiring a full dock replacement. In practice, Dell has not yet released a Thunderbolt 5 module, but the architecture is forward-looking. Ports are distributed cleanly across the chassis with no separate front-facing quick-access ports. Dell includes a 0.8m Thunderbolt 4 cable in the box.

Kensington SD5780T

The SD5780T features a brushed aluminum chassis that runs cooler and feels more premium than the Dell’s plastic housing. Kensington places the most-used ports on the front: the host Thunderbolt 4 port, the UHS-II SD card reader, one USB-A port, and the 3.5mm audio combo jack. The rear hosts the HDMI 2.1 output, two Thunderbolt 4 downstream ports, three USB-A ports, and the 2.5 GbE Ethernet jack. Two Kensington lock slots (standard and Nano format) are built into the chassis - a practical feature for shared office spaces and corporate environments. The dock includes a 1m Thunderbolt 4 cable.

Design winner: Kensington SD5780T. The aluminum enclosure, front-panel port layout, and dual security lock slots give it a clear edge for professional environments.

Port Comparison

Both docks offer 11 ports total, but the composition is very different.

USB Connectivity

The Dell WD22TB4 provides one USB-C 3.2 port, one USB-C 4.0 port with 15W Power Delivery, three USB-A 3.2 Gen 2 ports, and one USB-A 2.0 port. That is six USB ports in total, covering basic keyboard, mouse, and peripheral needs. The USB-A 2.0 port is noticeably slower than the rest of the dock and is mainly suitable for low-bandwidth devices like keyboards or dongles.

The Kensington SD5780T offers two USB-C 4.0 ports with 15W PD each, one USB-A 3.2 port with 7.5W charging, and three USB-A 3.2 ports with 4.5W charging each. That is six USB ports as well. The key differences: the Kensington drops the USB 2.0 port entirely (all USB-A run at USB 3.2 speeds), and both USB-C downstream ports run at USB4 speeds, giving high-bandwidth devices like external NVMe drives more headroom.

Video Outputs

The Dell WD22TB4 has an advantage in dedicated video outputs: two DisplayPort 1.4 ports and one HDMI 2.0 port are built in, giving you three video connectors that work directly with monitors without adapters. This is genuinely convenient in multi-monitor setups where plugging in a second DisplayPort monitor is a simple cable swap.

The Kensington SD5780T has one HDMI 2.1 port on the rear, with the second display running through one of the two downstream Thunderbolt 4 ports using a Thunderbolt or USB-C cable. The HDMI 2.1 connection supports 4K@120Hz on a single display (versus 4K@60Hz maximum from the Dell’s HDMI 2.0), and Thunderbolt 4 downstream ports are more versatile for Thunderbolt storage and daisy-chaining. Both docks support dual 4K@60Hz natively.

Networking

This is where the Kensington SD5780T creates the most significant separation. Its 2.5 Gbps Ethernet delivers 2.5 times the bandwidth of the Dell’s 1 Gbps Ethernet. If you regularly transfer large files to a NAS, work with a 2.5 GbE router, or access storage-heavy resources on a corporate LAN, the Kensington’s Ethernet is a substantial advantage. For standard web browsing and office use, both connections are more than fast enough.

Card Readers and Audio

The Kensington SD5780T includes a UHS-II SD 4.0 card reader on the front panel supporting transfers up to 312 MB/s, and a 3.5mm combo audio jack for wired headphones or a microphone.

The Dell WD22TB4 has neither. There is no card reader and no audio jack. If you need either, you will need an external USB card reader and a USB audio adapter, which reduces the available USB ports on an already limited dock.

Port winner: Kensington SD5780T. Faster Ethernet, no USB 2.0 dead weight, a card reader, audio connectivity, and HDMI 2.1. The Dell’s only port advantage is having two dedicated DisplayPort outputs for adapter-free dual monitor connections.

Display Support

Both docks support dual 4K@60Hz as their primary multi-monitor configuration, and both work with any Thunderbolt 4 host. Mac support for dual displays requires an M1 Pro/Max or later chip on either dock - this is an Apple hardware limitation.

Where the Kensington SD5780T extends beyond the Dell is at the high end: its HDMI 2.1 port supports 4K@120Hz on a single display, and on MacBook Pro models with M1/M2/M3/M4 Pro or Max chips, the dock supports dual 6K@60Hz when connected to monitors that support DSC 1.2. The Dell WD22TB4’s HDMI 2.0 caps out at 4K@60Hz.

For users who want to push a high-refresh-rate gaming or creative monitor alongside a standard office display, the Kensington’s HDMI 2.1 port opens options that the Dell simply cannot match.

Display winner: Kensington SD5780T. Identical dual 4K capability, but the Kensington adds HDMI 2.1 for 4K@120Hz and dual 6K@60Hz on compatible Mac hardware.

Power Delivery

Power delivery is the one area where the Dell WD22TB4 has a real, measurable advantage - but only for Dell laptop owners.

Dell WD22TB4: 130W for Dell, 90W for Others

The WD22TB4 uses Dell’s proprietary ExpressCharge technology to deliver up to 130W to compatible Dell business laptops. No other Thunderbolt 4 dock on the market matches this figure, and for Dell XPS or Precision users who have been frustrated by slow charging from third-party docks, it is a compelling feature. For non-Dell laptops, the dock falls back to 90W via standard USB-C Power Delivery.

Kensington SD5780T: 96W for Everyone

The Kensington SD5780T delivers a consistent 96W to any compatible laptop. That is 6W more than what non-Dell laptops get from the WD22TB4 in standard PD mode, and enough to keep most 13-16 inch Thunderbolt laptops fully charged during normal workloads.

Power delivery winner: Conditional. Dell WD22TB4 for Dell laptop owners who need 130W ExpressCharge. Kensington SD5780T for everyone else, since its 96W beats the Dell’s 90W standard PD.

Pricing and Value

At $319.99 MSRP, the Dell WD22TB4 is $80 cheaper than the Kensington SD5780T at $399.99. But consider what that extra $80 buys: 2.5 Gbps Ethernet (vs 1 Gbps), a 3.5mm audio jack (vs none), a UHS-II card reader (vs none), HDMI 2.1 (vs HDMI 2.0), and dual Kensington security locks. A standalone 2.5 GbE USB adapter alone costs $25-35, and a USB audio adapter runs another $15-20. Factor those in and the value gap narrows significantly.

Both docks carry a 3-year warranty, which is among the longest coverage available for Thunderbolt docks. The Kensington SD5780T frequently sells for $299-350 at major retailers, which makes its feature-to-price ratio even more competitive at street price.

Value winner: Kensington SD5780T for most buyers. The Dell wins only if 130W ExpressCharge for a Dell laptop justifies the trade-off.

Enterprise and Compatibility Features

Both docks ship without drivers and are plug-and-play on Windows 10+ and macOS 11+.

The Dell WD22TB4 integrates seamlessly into Dell-managed environments via Dell Command Update for automatic firmware management and Dell Dock Manager for monitoring. For IT departments that deploy Dell hardware at scale, this integration simplifies administration. The modular design is also future-proofing in principle, though it depends on Dell continuing to release new host modules.

The Kensington SD5780T offers a broader set of enterprise features independent of any laptop brand. Dual Kensington lock slots (standard and Nano formats) allow the dock to be physically secured to a desk or monitor arm - critical in shared workspaces where peripheral theft is a concern. TAA compliance allows the dock to be purchased through US government and government-contractor procurement channels where Trade Agreements Act compliance is required. Optional DockWorks software adds MAC address passthrough (so corporate network monitoring sees the laptop’s address, not the dock’s) and automatic WiFi disabling when Ethernet is active.

Enterprise winner: Context-dependent. Dell WD22TB4 for Dell-managed IT environments. Kensington SD5780T for mixed-platform or government environments that need TAA compliance and physical security locks.

macOS and Windows Compatibility

The Dell WD22TB4 works with macOS but Dell does not officially support it. No macOS-optimized firmware updates, no Dell support for Mac-specific issues. For Windows users in a Dell ecosystem, it is the natural fit. CalDigit provides significantly better macOS support on their docks - see our CalDigit TS4 review if Mac compatibility is a priority.

The Kensington SD5780T has full official support on both Windows and macOS. Kensington maintains DockWorks software updates for both platforms and documents macOS compatibility thoroughly, including specific guidance for M-series chip variants.

Compatibility winner: Kensington SD5780T for cross-platform environments. Dell WD22TB4 for Windows/Dell ecosystems.

Verdict: Kensington SD5780T Wins for Most Buyers

The Kensington SD5780T scores 8.0/10 against the Dell WD22TB4’s 7.5/10 for good reason. Faster 2.5 Gbps Ethernet, native audio and card reader connectivity, HDMI 2.1 output, better cross-platform support, and enterprise security features make it the more capable dock for the majority of professional buyers. Its higher MSRP is offset by what it includes compared to the cost of adding equivalent accessories to the Dell.

Choose the Kensington SD5780T if:

• You want 2.5 Gbps Ethernet without a USB adapter
• You need a 3.5mm audio jack or SD card reader built into the dock
• You use a Mac or a non-Dell Windows laptop
• You work in a shared office and need a Kensington security lock
• Your procurement requires TAA-compliant hardware
• You want HDMI 2.1 for a 4K@120Hz or 6K@60Hz display (on compatible Mac)

Choose the Dell WD22TB4 if:

• You own a Dell business laptop and want 130W ExpressCharge
• You work in a Dell-managed IT environment with Dell Command Update
• You prefer two dedicated DisplayPort outputs for adapter-free dual monitor connections
• The modular upgrade path for future Thunderbolt standards appeals to you
• The lower MSRP is a hard requirement

For more details on each dock, read our Dell WD22TB4 review and Kensington SD5780T review. You may also want to compare how the Kensington stacks up against CalDigit’s flagship in our CalDigit TS4 vs Kensington SD5780T comparison.