Kensington SD4780P Review 2026 - Specs, Pros & Cons

Name: Kensington SD4780P USB-C and USB-A 10Gbps Dual 4K Hybrid Docking Station
Brand: Kensington
SKU: K33620NA

The Kensington SD4780P is a universal DisplayLink dock for desks where not every laptop has the same port. Kensington sells it as the SD4780P USB-C and USB-A 10Gbps Dual 4K Hybrid Docking Station, model K33620NA. It connects through USB-C, USB-A, Thunderbolt 3, or Thunderbolt 4, but it runs at USB dock speeds rather than full Thunderbolt bandwidth. That is the trade. You give up native Thunderbolt speed, but you gain a dock that can handle older USB-A laptops, USB-C laptops without native display output, MacBooks, Surface devices, Windows PCs, and Chromebooks after the right DisplayLink support is in place. The display setup is meant for two-monitor office work. The dock has four video outputs: two HDMI 2.0 ports and two DisplayPort++ 1.2 ports. You can use any two of them at once for single or dual 4K@60Hz output through DisplayLink. Kensington and reseller spec sheets list the maximum resolution as 4096x2160 at 60Hz, which this site stores as the standard 3840x2160 4K class because the product schema does not have a 4096x2160 enum. The four physical video ports are for cable flexibility, not four monitors. Power delivery is one of the stronger reasons to choose this older universal dock over cheap DisplayLink boxes. The included 135W power supply can feed the dock and provide up to 100W USB-C Power Delivery to a compatible laptop. Kensington includes a 1m USB-C host cable with a USB-A adapter. USB-A laptops still cannot receive USB-C Power Delivery over that data path, so Kensington points those users to the optional K38310NA power splitter for charging. Around the rest of the chassis you get six USB ports, Gigabit Ethernet, a 3.5mm combo audio jack, Kensington lock support, VESA mounting support, an on-off switch, and optional DockWorks software.

Pros & Cons

What We Like

Works with USB-C, USB-A, Thunderbolt 3, Thunderbolt 4, Windows, macOS, and ChromeOS hosts
Dual 4K@60Hz output covers normal two-monitor office setups
Two HDMI and two DisplayPort outputs let users choose common monitor cables without adapters
100W USB-C Power Delivery is strong for a universal dual-display dock
Six USB ports, Gigabit Ethernet, audio, lock slot support, and VESA mounting fit permanent desks
Three-year limited warranty and lifetime Kensington technical support beat most budget DisplayLink docks

What Could Be Better

DisplayLink driver installation is required for display output on Windows and macOS
Workaround: Install the latest DisplayLink driver from Synaptics before deploying the dock. On macOS, grant DisplayLink Manager the required screen recording permission.
Four video outputs support only two active external monitors
Workaround: Use the ports as HDMI or DisplayPort options. If you need three or four monitors, choose a higher-end DisplayLink dock such as the Kensington SD4790P.
USB-A laptop charging needs an optional power splitter or the laptop's own charger
Workaround: Budget for Kensington's K38310NA power splitter when supporting older USB-A laptops that need desk charging.
DisplayLink is a poor fit for gaming, HDCP streaming, and color-critical work
Workaround: Use a native Thunderbolt or USB-C Alt Mode dock for latency-sensitive display work or protected streaming setups.
Only Gigabit Ethernet, not 2.5GbE
Workaround: Use a separate 2.5GbE adapter or a newer dock if faster wired networking matters.

Display Support

Max Displays: 2

1 display (Official and reseller specifications list single display support up to 4096x2160@60Hz through HDMI 2.0 or DisplayPort++ 1.2. Stored as 3840x2160 because the site schema uses standard 4K classes.)

3840x2160 @ 60Hz

2 displays (Dual 4K@60Hz via DisplayLink. Use any two of the two HDMI 2.0 and two DisplayPort++ 1.2 outputs. The four ports provide connection choice, not four active external displays.)

3840x2160 @ 60Hz

Ports & Connectivity

USB Ports

1x USB-C 3.2 15W

1x USB-A 3.2 12W

4x USB-A 3.1

Video Outputs

2x HDMI 2.0

2x DisplayPort 1.2++

Network

1x Ethernet (1 Gbps)

Audio

1x 3.5mm combo

Full Specifications

General
Manufacturer	Kensington
Model	K33620NA
Connectivity
Host Connection	USB-C
Max Data Rate	10 Gbps
Driver Required	DisplayLink
Display Output
Max Displays	2
1x Display	3840x2160 @ 60Hz (Official and reseller specifications list single display support up to 4096x2160@60Hz through HDMI 2.0 or DisplayPort++ 1.2. Stored as 3840x2160 because the site schema uses standard 4K classes.)
2x Display	3840x2160 @ 60Hz (Dual 4K@60Hz via DisplayLink. Use any two of the two HDMI 2.0 and two DisplayPort++ 1.2 outputs. The four ports provide connection choice, not four active external displays.)
Ports (10+ total)
USB-C 3.2	1x (15W)
USB-A 3.2	1x (12W)
USB-A 3.1	4x
HDMI 2.0	2x
DisplayPort 1.2++	2x
Ethernet (RJ45)	1x 1 Gbps
Audio (3.5mm-combo)	1x
Power
Power Input	DC-barrel
Laptop Charging	Up to 100W

Compatibility

Windows (7+)

Kensington lists Windows 7 or newer. Install the current DisplayLink driver before relying on external displays. Windows laptops must support USB-C Power Delivery to charge through the host cable.

macOS (10.14+)

Kensington lists macOS 10.14 or newer. DisplayLink driver installation and macOS screen recording permission are required for external displays. DisplayLink can work around native display limits on base Apple Silicon MacBooks for office use.

ChromeOS (44+)

Kensington lists ChromeOS 44 or newer. ChromeOS R51 and later include DisplayLink support without a separate driver package.

Known Issues

Linux

Not listed as an official Kensington-supported operating system

Users expecting a driverless dock

DisplayLink driver required

USB-A laptops expecting single-cable charging

USB-A cannot provide USB-C Power Delivery

Gaming, protected streaming, and color-critical display work

DisplayLink is not ideal

7 /10

Our Verdict

Very Good

The SD4780P makes sense when compatibility matters more than elegance. If every laptop on the desk has Thunderbolt 4 or USB4, buy a native Thunderbolt dock instead. It will be simpler, faster, and less dependent on display software. The SD4780P is for the messier desk: one user brings a USB-C Windows laptop, another brings an older USB-A machine, and someone else plugs in a MacBook that needs DisplayLink to run two external monitors. For that job, the dock is still useful. Dual 4K@60Hz is enough for most office work, and the mix of HDMI and DisplayPort outputs avoids adapter clutter. The 100W host charging is generous for a dual-display universal dock, and the three-year Kensington warranty is better than the coverage on most no-name DisplayLink docks. Amazon currently shows the B08H4QR5QK listing as in stock with a 3.9-star rating from 75 reviews, while ReviewMeta indexed 139 Amazon reviews for the same ASIN. That is more public feedback than Kensington's newer SD4782P has, but the tone is mixed enough to keep expectations realistic. The main catch is DisplayLink. It is good for spreadsheets, browser tabs, admin panels, calls, and normal office apps. It is not the display path I would choose for gaming, color-critical editing, or HDCP-protected streaming. Windows and macOS users should plan on installing the current DisplayLink driver, and macOS users also need the usual screen recording permission for DisplayLink Manager. If you want a universal dock for mixed laptop fleets and dual 4K monitors, the SD4780P is a reasonable buy when priced well. If you want driverless video or full Thunderbolt bandwidth, skip it.

Frequently Asked Questions

Does the Kensington SD4780P support dual 4K monitors?

Yes. Kensington and reseller specifications list single or dual displays up to 4096x2160 at 60Hz through DisplayLink. This site stores that as the standard 4K class because the product schema does not use a separate 4096x2160 value.

Does the SD4780P require DisplayLink drivers?

Yes. The SD4780P uses DisplayLink for display output. Windows and macOS users should install the current DisplayLink driver from Synaptics. ChromeOS R51 or later supports DisplayLink docks without a separate driver install.

Can the Kensington SD4780P charge my laptop?

Yes, up to 100W for compatible USB-C laptops that support USB-C Power Delivery. USB-A laptops cannot charge over the USB-A host connection, so they need their normal charger or Kensington's optional K38310NA power splitter.

Will the SD4780P work with MacBooks?

Yes, with DisplayLink installed. Kensington lists macOS support, and the Amazon listing names MacBook Air, MacBook Pro, and Apple Silicon MacBook families. For best results on macOS, install DisplayLink Manager and approve its screen recording permission.

How many monitors can the SD4780P run?

Two external monitors. The dock has two HDMI 2.0 and two DisplayPort++ 1.2 outputs, but those four ports are connection choices. They do not mean four active monitors.