Kensington SD5780T Review 2026 - Specs, Pros & Cons

Name: Kensington SD5780T Thunderbolt 4 Dual 4K/6K Docking Station with 96W PD
Brand: Kensington
SKU: K33040NA

The Kensington SD5780T is the direct successor to the SD5700T, with one defining upgrade: HDMI 2.1 replaces one of the downstream Thunderbolt 4 ports, making dual-monitor setups far more accessible for users with standard monitors. Where the SD5700T required adapters for both displays, the SD5780T delivers a direct HDMI connection for one monitor out of the box, while the two remaining downstream Thunderbolt 4 ports handle the second display, daisy-chain devices, or high-speed storage. This 11-port Thunderbolt 4 docking station connects via a single 1m cable and delivers 96W of power to your laptop, keeping most ultrabooks and 15-inch Thunderbolt laptops fully charged during normal workloads. The 2.5 Gbps Ethernet port is a notable step up from the 1 Gbps connections found on many competing docks, and it is one of the clearest reasons to consider the SD5780T over alternatives in the same price range. Front ports include the host Thunderbolt 4 connection, a UHS-II SD 4.0 card reader, a USB-A 3.2 Gen 2 port for phone charging, and a 3.5mm combo audio jack. The rear hosts the HDMI 2.1 output, two downstream Thunderbolt 4 ports running at 40 Gbps with 15W PD each, three additional USB-A 3.2 Gen 2 ports, and the 2.5 Gbps Ethernet jack. A 180W power brick powers the dock. Kensington backs the SD5780T with a three-year limited warranty, among the longest in the Thunderbolt dock market. The brushed aluminum chassis includes dual Kensington lock slots (standard and Nano), making it well-suited for managed office environments. Optional DockWorks software adds MAC address passthrough and automatic WiFi disabling on Ethernet connection, both useful in corporate IT deployments. The SD5780T is also TAA compliant, supporting US government procurement requirements.

Pros & Cons

What We Like

2.5 Gbps Ethernet provides faster wired networking than the 1 Gbps found in most competing Thunderbolt docks
HDMI 2.1 output allows direct connection of one monitor without adapters, supporting 4K@120Hz on a single display
96W power delivery through the single Thunderbolt 4 cable charges most 13 to 16-inch laptops without a separate charger
Three-year limited warranty is among the longest coverage available for a Thunderbolt dock
Dual Kensington lock slots and TAA compliance make it well-suited for enterprise and government deployments
UHS-II SD 4.0 card reader supports ultra-fast media transfers at up to 312 MB/s

What Could Be Better

Only two downstream Thunderbolt 4 ports, one fewer than the predecessor SD5700T which offered three
Workaround: Use the HDMI 2.1 port for one monitor and one downstream TB4 port for a second monitor or storage device. If you need more than two Thunderbolt daisy-chain connections, consider the SD5700T or the CalDigit TS4.
No microSD card reader; only a full-size SD card slot is included
Workaround: Use a USB-A to microSD adapter in one of the USB-A ports if you regularly work with microSD media.
Original MSRP of $399.99 is high relative to the CalDigit TS4 at $379.99, which offers more ports and similar capabilities
Workaround: The dock frequently sells for $299-350 at Amazon, Lenovo, and other retailers, which significantly improves the value proposition.

Display Support

Max Displays: 2

1 display (Single 8K@60Hz via Thunderbolt 4 downstream port. Requires host laptop with DSC 1.2 and HBR3 support.)

7680x4320 @ 60Hz

1 display (Single 4K@120Hz via HDMI 2.1 port.)

3840x2160 @ 120Hz

2 displays (Dual 4K@60Hz via HDMI 2.1 plus one Thunderbolt 4 downstream port. Requires M1 Pro/Max or later on Mac. Base M1/M2/M3 Mac and USB-C only laptops limited to single display.)

3840x2160 @ 60Hz

2 displays (Dual 6K@60Hz for MacBook with M1/M2/M3/M4 Pro or Max chipsets. Monitors and host must both support DSC 1.2 and DP 1.4 HBR3.)

5120x2880 @ 60Hz

Ports & Connectivity

USB Ports

2x USB-C 4.0 15W

1x USB-A 3.2 7.5W

3x USB-A 3.2 4.5W

Video Outputs

1x HDMI 2.1

Network

1x Ethernet (1 Gbps / 2.5 Gbps)

Audio

1x 3.5mm combo

Card Readers

1x SD (UHS-II (SD 4.0))

Full Specifications

General
Manufacturer	Kensington
Model	K33040NA
Release Date	2022-10
MSRP	$399.99
Connectivity
Host Connection	Thunderbolt 4
Max Data Rate	40 Gbps
Driver Required	No (native)
Display Output
Max Displays	2
1x Display	7680x4320 @ 60Hz (Single 8K@60Hz via Thunderbolt 4 downstream port. Requires host laptop with DSC 1.2 and HBR3 support.)
1x Display	3840x2160 @ 120Hz (Single 4K@120Hz via HDMI 2.1 port.)
2x Display	3840x2160 @ 60Hz (Dual 4K@60Hz via HDMI 2.1 plus one Thunderbolt 4 downstream port. Requires M1 Pro/Max or later on Mac. Base M1/M2/M3 Mac and USB-C only laptops limited to single display.)
2x Display	5120x2880 @ 60Hz (Dual 6K@60Hz for MacBook with M1/M2/M3/M4 Pro or Max chipsets. Monitors and host must both support DSC 1.2 and DP 1.4 HBR3.)
Ports (7+ total)
USB-C 4.0	2x (15W)
USB-A 3.2	1x (7.5W)
USB-A 3.2	3x (4.5W)
HDMI 2.1	1x
Ethernet (RJ45)	1x 1 Gbps / 2.5 Gbps
Audio (3.5mm-combo)	1x
SD Card Reader	1x
Power
Power Input	DC-barrel
Laptop Charging	Up to 96W

Compatibility

Windows (10+)

Full support with Thunderbolt 4, Thunderbolt 3, USB4, and USB-C equipped laptops. Dual 4K display works natively on Thunderbolt hosts. USB-C only laptops limited to single display.

macOS (11.0 (Big Sur)+)

Full support on Thunderbolt 3 and Thunderbolt 4 Macs. Dual 4K display requires M1 Pro/Max or later. M1/M2/M3 base chip Macs are limited to one external display due to Apple hardware constraints.

Known Issues

MacBooks with base M1, M2, or M3 chip

Limited to single external display

USB-C only laptops (non-Thunderbolt)

Limited to single external display

Some AMD Ryzen laptops (ThinkPad with Ryzen 7000 series)

Second monitor may not work via TB4 downstream port with USB-C to DisplayPort adapter

8 /10

Our Verdict

Excellent

The Kensington SD5780T is a well-rounded Thunderbolt 4 dock that corrects the main limitation of its predecessor: native HDMI 2.1 output is now included. That single change makes dual-monitor setups significantly more practical, as the HDMI port handles one display directly while the Thunderbolt 4 downstream ports manage the second monitor or additional high-speed devices. You no longer need a specialized Thunderbolt-to-HDMI cable for the second display. The 96W power delivery comfortably charges most Thunderbolt-equipped laptops, and the 2.5 Gbps Ethernet stands out compared to the 1 Gbps connections on competing docks like the Razer Thunderbolt 4 Dock Chroma and OWC Thunderbolt 4 Dock. PCWorld testing confirmed solid performance: nearly no dropped frames during sustained 4K streaming and smooth simultaneous data transfers over the Thunderbolt 4 connection. The dock ran cool during testing with no thermal issues, and the aluminum chassis dissipates heat effectively. There are trade-offs to weigh. The SD5780T has two downstream Thunderbolt 4 ports rather than the three found on the SD5700T. For most users this is a net positive since few need three Thunderbolt daisy-chains, but content creators running multiple Thunderbolt storage devices simultaneously may find the port count limiting. There is also no microSD card reader alongside the UHS-II SD slot, unlike the CalDigit TS4 which includes both. Pricing has varied since launch. At the original $399.99 MSRP the comparison against the CalDigit TS4 at $379.99 with 18 ports was unfavorable. At the $299-350 range at which this dock frequently sells, the SD5780T becomes a genuinely competitive option, particularly for enterprise buyers who value the three-year warranty, dual lock slots, and TAA compliance. For business users who need reliable Thunderbolt 4 connectivity, a native HDMI output, fast 2.5 GbE networking, and long warranty coverage, the SD5780T earns a confident recommendation. For home users on a tighter budget, the OWC Thunderbolt 4 Dock or the CalDigit TS4 (when on sale) offer strong alternatives.

Frequently Asked Questions

What is the difference between the Kensington SD5780T and SD5700T?

The SD5780T replaces one of the SD5700T's three downstream Thunderbolt 4 ports with an HDMI 2.1 output. This makes dual-monitor setups easier since you can plug a standard HDMI monitor directly without an adapter. The SD5780T also increases power delivery from 90W to 96W and upgrades Ethernet from 1 Gbps to 2.5 Gbps. The SD5700T has three TB4 downstream ports and built-in speakers; the SD5780T has two TB4 downstream ports, no built-in speakers, but native HDMI output and faster networking.

Does the Kensington SD5780T support dual monitors on a Mac?

Yes, on MacBooks with M1 Pro/Max, M2 Pro/Max, M3 Pro/Max, or later chips, the dock supports dual external displays. Use the HDMI 2.1 port for one monitor and a Thunderbolt 4 downstream port for the second. Base M1, M2, and M3 chip MacBooks are limited to one external display due to Apple hardware constraints, not a dock limitation. Dual 6K@60Hz is supported on compatible MacBook Pro models with M1/M2/M3 Pro or Max when connected to monitors that support DSC 1.2 and DP 1.4 HBR3.

Does the Kensington SD5780T need drivers?

No drivers are required for standard use. The dock is plug and play on Windows 10 or later and macOS 11 or later. Kensington offers optional DockWorks software, which adds network management features like MAC address passthrough and automatic WiFi disabling when Ethernet is active. These features are primarily useful in corporate IT environments. The dock functions fully without DockWorks installed.

How does the SD5780T compare to the CalDigit TS4?

The CalDigit TS4 has more ports (18 vs 11), slightly higher power delivery (98W vs 96W), and includes both SD and microSD card readers. It does not include a dedicated HDMI port. The SD5780T has HDMI 2.1 built in, Kensington security lock slots, TAA compliance, and an equivalent three-year warranty. The TS4 is generally the better pick for power users who need maximum port count. The SD5780T is a better fit for enterprise buyers who need lock slot security, TAA compliance, or a direct HDMI output.

Does the Kensington SD5780T work with USB-C laptops that do not have Thunderbolt?

Yes, with limitations. The dock connects to USB-C laptops via its host port and provides charging, USB peripherals, Ethernet, and the HDMI 2.1 output for a single display. Dual display output and 40 Gbps Thunderbolt data speeds are not available on non-Thunderbolt USB-C hosts. USB4 laptops also work with the dock but are limited to a single external display. Full dual-display and maximum data throughput require a Thunderbolt 3 or Thunderbolt 4 host.