Kensington SD4790P vs SD4782P - DisplayLink Dock Comparison 2026

Kensington SD4790P vs SD4782P: same family, different desk size

The Kensington SD4790P and Kensington SD4782P are close enough that it is easy to mix them up. Both are Kensington EQ business docks. Both connect over USB-C class bandwidth at up to 10Gbps. Both support USB-C and USB-A host scenarios, both use DisplayLink, both provide up to 100W USB-C Power Delivery to compatible laptops, both have Gigabit Ethernet, both include audio, and both carry a three-year limited warranty.

They are aimed at different desks, though.

The SD4790P is the bigger mixed-fleet dock. It is built around a hybrid display design with two displays available through USB-C Alt Mode and additional displays handled through DisplayLink. The product data lists up to four external 4K@60Hz monitors on compatible Windows or Chrome laptops, and up to three external 4K@60Hz monitors on M1, M2, and M3 MacBooks after installing DisplayLink. It has six physical video outputs: three HDMI 2.0 ports, one DisplayPort++ 1.4 port, and two DisplayPort 1.2++ ports.

The SD4782P is the smaller dual-display universal dock. It is also DisplayLink based, and that is what lets it work across USB-C laptops, USB-A laptops, Thunderbolt 3 and Thunderbolt 4 systems, USB4 hosts, Windows PCs, MacBooks, and Chromebooks. Its display ceiling is lower: one or two external 4K displays at 60Hz. The four video outputs are there for cable flexibility, not for four monitors.

The short verdict: the SD4790P wins this comparison overall. It has a higher score in the product data, a higher monitor ceiling, more video outputs, and newer stated OS baselines. It is the better choice for a permanent desk that needs more than two external displays or wants one dock that can cover a wide range of modern laptops. The SD4782P is still the better value-minded and legacy-friendly option when dual 4K is enough, especially if the included 100W power splitter matters.

If you are still deciding whether DisplayLink is the right approach, read our USB-C vs Thunderbolt docking stations guide. This matchup is a good example of why the answer depends on the laptop fleet, not just the dock.

Quick specs comparison

Display support: the SD4790P is the reason to upgrade

The display section is the clearest difference between these two Kensington docks.

The SD4782P supports one or two external 4K displays at 60Hz. Its YAML notes that Kensington’s FAQ lists 4096x2160 at 60Hz for single or dual displays, while this site’s schema stores that under the standard 3840x2160 4K class. You can use any combination of its two HDMI 2.0 and two DP++ 1.2 outputs, but the product data is explicit about the maximum: two external displays at once.

That is enough for a lot of office desks. A dual 4K setup covers email, browser tabs, spreadsheets, admin consoles, calendar, calls, ticket systems, and normal document work. Because the SD4782P uses DisplayLink, it can also provide video when a normal USB-C Alt Mode dock would fail. That includes USB-A hosts and USB-C hosts without DisplayPort Alt Mode, provided the operating system path supports DisplayLink.

The SD4790P goes further. Its YAML lists dual display support through USB-C Alt Mode, triple 4K@60Hz for M1, M2, and M3 MacBooks after installing DisplayLink, and quad 4K@60Hz on compatible Windows or Chrome laptops through the hybrid USB-C Alt Mode plus DisplayLink path. The notes also say the product specifications require DSC for the maximum mode.

That makes the SD4790P the better pick if the desk needs three or four external monitors. It is also the better option for a base Apple Silicon MacBook user who wants more than two office displays through DisplayLink. The caveat is the same caveat that appears throughout the SD4790P YAML: DisplayLink is software-assisted display output. It is fine for office productivity, dashboards, spreadsheets, browser work, and calls. It is not the dock to buy for gaming, high-refresh monitors, HDCP-protected streaming across DisplayLink screens, or color-sensitive media work.

Display winner: SD4790P. The SD4782P is a cleaner dual-display answer, but the SD4790P has the larger monitor ceiling and more physical video flexibility.

For more options in this category, see our guide to the best docking stations for dual monitors. If you actually need three or four displays, this comparison is where the SD4790P starts to make more sense.

Video ports: six outputs versus four outputs

Both docks use their video ports as flexibility, not as a promise that every connector can be active at once.

The SD4782P gives you two HDMI 2.0 ports and two DisplayPort++ 1.2 ports. That is a sensible layout for dual-monitor offices because it lets people connect common HDMI monitors or DisplayPort monitors without adapters. The product file warns that four video ports still mean two external displays total.

The SD4790P gives you three HDMI 2.0 ports, one DisplayPort++ 1.4 port, and two DisplayPort 1.2++ ports. Again, the maximum display count is four, not six. But the extra connectors matter in offices that do not standardize on one monitor type. A desk with two HDMI displays today and two DisplayPort displays tomorrow can use the same dock with less adapter clutter.

The SD4790P’s port mix also lines up better with its monitor ceiling. A quad-display dock with three HDMI and three DisplayPort connectors gives IT more room to match real monitor cables. The SD4782P is fine when the target setup is always one or two screens.

Video port winner: SD4790P. More outputs and a higher display ceiling make the larger dock more flexible for shared desks and multi-monitor deployments.

Driver and setup: both are DisplayLink docks

This is not a driverless matchup. Both product files list DisplayLink, and both point buyers toward the Synaptics DisplayLink driver path.

The SD4782P uses DisplayLink over a 10Gbps USB connection. Its product data says the driver is required before normal use on Windows and macOS, while ChromeOS build R51 or later supports DisplayLink docks without a separate driver install. It also notes that DisplayLink can work around the single-native-display limit on base Apple Silicon MacBooks for office-style dual-display work.

The SD4790P is a bit different because it is a hybrid dock. Its notes say video 1 and video 2 can work through USB-C Alt Mode, while triple-display Mac and quad-display Windows or Chrome setups rely on DisplayLink. That means a basic two-display USB-C Alt Mode setup can be more direct, but the reason to buy the SD4790P is usually the extra DisplayLink-backed display capacity.

Neither dock is ideal if the office cannot install display software. On macOS, DisplayLink also brings permission steps. Users need to approve DisplayLink Manager’s screen recording permission before external displays work as expected. In locked-down corporate images, that setup should be tested before buying a large batch.

Setup winner: tie, with a small SD4790P edge for hybrid flexibility. Both need DisplayLink for their full capability. The SD4790P can still use USB-C Alt Mode for the first two displays, but its headline advantage depends on DisplayLink too.

Host compatibility: broad support, different generations

The SD4782P looks broader if you read only the OS version list. Its YAML lists Windows 7 or newer, macOS 10.14 or newer, and ChromeOS 44 or newer. It also says the dock works with USB-C, USB-A, Thunderbolt 3, Thunderbolt 4, and USB4 hosts through DisplayLink. That older OS support can matter in offices with aging laptops, kiosks, shared workstations, or devices that do not get refreshed on a neat schedule.

The SD4790P has newer minimums: Windows 10 or newer, macOS 11 or newer, and ChromeOS 114 or newer. It also lists compatibility with USB-C, USB-A, Thunderbolt 4, USB4, Windows, macOS, and ChromeOS hosts. Its introduction explicitly positions it for offices with USB-C laptops, Thunderbolt laptops, USB4 systems, Chromebooks, MacBooks, and older USB-A machines.

So the better compatibility answer depends on what “mixed fleet” means. If your fleet includes older operating systems, the SD4782P has the wider stated OS floor. If your fleet is made of newer laptops but needs more monitor capacity, the SD4790P is the better fit.

Both docks share the same broad DisplayLink caution. Linux is not listed as an official Kensington-supported operating system in either product file. Synaptics may provide Linux DisplayLink packages separately, but the Kensington YAML data does not treat Linux as supported for these models.

Compatibility winner: SD4782P for older OS coverage, SD4790P for newer multi-monitor fleets. The SD4782P has lower OS minimums. The SD4790P has the stronger display promise for current Windows, ChromeOS, and listed MacBook setups.

Ports and desk hardware

The SD4790P has two front USB-C ports: one listed with 7.5W accessory power and one with 4.5W. It also has four rear USB-A ports, three HDMI ports, three DisplayPort outputs, Gigabit Ethernet, and a 3.5mm combo audio jack. That is enough for a normal business desk, but the product data calls out that only the two front USB-C ports are 10Gbps. The rear USB-A ports are USB 3.2 Gen 1 at 5Gbps.

The SD4782P has one USB-C 3.2 Gen 2 port with 18W accessory charging, one USB-A 3.2 port with 7.5W, four more USB-A ports, two HDMI 2.0 ports, two DP++ 1.2 outputs, Gigabit Ethernet, and a 3.5mm combo audio jack. Its YAML describes the USB layout as six USB 3.2 Gen 2 ports, which is stronger for raw USB accessory bandwidth than the SD4790P’s split between front 10Gbps USB-C and rear 5Gbps USB-A.

In plain English: the SD4790P is the better video dock, while the SD4782P has a slightly more attractive everyday USB accessory story if you do not need more than two monitors. The SD4782P also gives one USB-C accessory port up to 18W, compared with 7.5W and 4.5W on the SD4790P’s front USB-C ports.

Networking is a tie. Both product files list Gigabit Ethernet, not 2.5GbE. Audio is also a tie because both include a 3.5mm combo jack. Neither YAML lists a card reader.

Ports winner: SD4790P for displays, SD4782P for accessory charging and USB-A count. The overall advantage still goes to the SD4790P because this is a docking station comparison and its video capability is much higher, but the SD4782P is not weak for a dual-monitor desk.

Charging: both hit 100W, but the splitter detail matters

Both docks list up to 100W USB-C Power Delivery to compatible host laptops. Both require external power. For a modern USB-C laptop that supports Power Delivery, this category is mostly a tie.

The difference is what happens when the laptop is not a normal USB-C PD host.

The SD4782P includes a 100W power splitter for USB-A laptops or USB-C laptops that do not support charging through the dock. Its product data repeatedly frames that splitter as one of the reasons the dock is useful in legacy offices. The setup is less tidy than one-cable USB-C charging, but it can keep an older desk running without forcing a separate laptop charger path.

The SD4790P can also work with USB-A hosts for data and video, but the YAML says USB-A laptop charging needs Kensington’s optional K38310 power splitter. That means the charging story is not as complete out of the box for legacy hosts.

Charging winner: tie for modern USB-C laptops, SD4782P for USB-A and non-PD USB-C laptops. Both hit 100W over USB-C PD. The SD4782P is more prepared for awkward charging cases because the splitter is included in the product data.

MacBook decision: choose based on monitor count

Both docks can make sense for MacBook office setups, but neither behaves like a native Thunderbolt dock.

The SD4782P lists macOS 10.14 or newer and says DisplayLink can work around the single-native-display limit on base Apple Silicon MacBooks for office-style dual-display work. It still needs the DisplayLink driver and macOS screen recording permission. It is not the right dock for gaming or color-critical media work, but it can be a practical office dock for two external displays.

The SD4790P lists macOS 11 or newer and says Kensington lists up to three external 4K@60Hz monitors for M1, M2, and M3 MacBooks with DisplayLink installed. The Amazon listing also names M4 MacBook support. That makes it the stronger choice if the Mac desk needs three external 4K office displays.

There is an important boundary. DisplayLink is not the same as native Thunderbolt display output. If you want the cleanest Mac docking experience for high-refresh monitors, direct GPU output, protected streaming, or color-critical work, a native Thunderbolt dock is a better direction. For that path, compare these docks with options like the CalDigit TS4 or read the broader docking station buying guide.

Mac winner: SD4790P for three office displays, SD4782P for simpler dual-display desks. The SD4790P has the higher Mac monitor ceiling in the YAML. The SD4782P has older macOS support and a simpler dual-display target.

Windows and ChromeOS decision

For Windows and ChromeOS, the SD4790P is the more capable dock if the desk needs maximum monitor count.

The SD4790P product file lists Windows 10 or newer and ChromeOS 114 or newer. It also lists quad 4K@60Hz on compatible Windows or Chrome laptops through the hybrid USB-C Alt Mode plus DisplayLink path. That is the strongest reason to choose it. If the office runs dashboards, trading tools, large spreadsheet walls, support queues, or any setup that genuinely benefits from three or four external monitors, the SD4790P earns its place.

The SD4782P product file lists older OS support: Windows 7 or newer and ChromeOS 44 or newer, with ChromeOS R51 or later supporting DisplayLink docks without a separate driver install. That can matter if the dock is being bought for a mixed office with older machines.

For a current Windows laptop, though, the SD4790P is easier to justify because it buys more monitor headroom. For older systems or desks where two displays are the known maximum, the SD4782P remains the more modest and practical choice.

Windows and ChromeOS winner: SD4790P for modern multi-monitor desks, SD4782P for older compatibility. The SD4790P has the bigger ceiling. The SD4782P has the older stated floors.

Reliability and long-term feedback

Both product files keep the scores conservative because public long-term feedback is thin.

The SD4790P has a 7.4 score. Its verdict notes that Amazon showed a 4.4-star rating from 24 reviews during the product pass, while Best Buy had reviews coming soon. That is enough to confirm activity, but not enough to call it a proven long-term office standard. The SD4790P also carries the usual DisplayLink risk: sleep-wake behavior, driver updates, macOS permission changes, and protected video limitations can matter more than the spec sheet suggests.

The SD4782P has a 7.2 score. Its verdict also points to limited public feedback, with Best Buy not yet reviewed around the review period. Its risk profile is similar because it is also a DisplayLink dock, though the lower display ceiling makes the deployment target simpler.

Neither dock is a bad score. The numbers mostly say the same thing: these are useful business docks with real compatibility advantages, but they should be tested with the exact laptop models, monitors, driver versions, and sleep-wake behavior before an office standardizes on them.

Reliability winner: slight SD4790P edge by score, practical tie by driver risk. The SD4790P scores higher, but both live in the same DisplayLink maintenance world.

Value: capability versus simplicity

The SD4790P lists a $249.99 MSRP in its YAML. The SD4782P does not list MSRP in the structured field, though its verdict mentions a roughly $200 to $215 retail range during review. Since the structured frontmatter should stay conservative, the safer value comparison is based on what each dock gives you rather than a fixed price gap.

The SD4790P gives you more display capability. Four external 4K@60Hz displays on compatible Windows or Chrome laptops is a much bigger promise than dual 4K. Three external 4K@60Hz displays on listed Apple Silicon MacBooks is also stronger than the SD4782P’s dual-display target. It adds more video connectors, keeps 100W host charging, and still covers USB-C and USB-A host scenarios.

The SD4782P gives you simpler expectations. It is a dual-display dock, it has a strong USB accessory layout, it includes the 100W power splitter for legacy charging cases, and it lists older OS minimums. If the desk only needs two monitors, paying for the SD4790P’s larger display engine may not help.

Value winner: SD4790P if you need three or four displays, SD4782P if dual 4K is enough. The SD4790P is the more capable dock. The SD4782P is the more focused one.

Verdict: SD4790P wins, but the SD4782P still has a clear lane

The Kensington SD4790P is the better dock overall. It has the higher product score, the higher monitor ceiling, a broader physical video layout, and a stronger case for modern multi-monitor desks. If you need three or four external office displays from one DisplayLink-capable dock, this is the easy choice between the two.

The Kensington SD4782P is still the smarter buy for many desks. It is easier to explain: dual 4K, DisplayLink, USB-C and USB-A support, 100W host charging for modern laptops, and an included power splitter for legacy charging cases. It is the dock I would choose for a shared desk where two monitors are enough and older laptops are still part of the plan.

Choose the SD4790P when monitor count is the problem. Choose the SD4782P when compatibility and simpler dual-display deployment matter more.

Choose the Kensington SD4790P if:

• You need more than two external displays.
• You want up to quad 4K@60Hz support on compatible Windows or Chrome laptops.
• You want up to three 4K@60Hz external displays on listed Apple Silicon MacBooks with DisplayLink.
• You need three HDMI and three DisplayPort connectors for monitor flexibility.
• You are building a current office desk around Windows 10+, macOS 11+, or ChromeOS 114+ machines.
• You can install and maintain DisplayLink drivers where needed.

Choose the Kensington SD4782P if:

• Two external 4K@60Hz monitors are enough.
• Your office includes older Windows, macOS, or ChromeOS systems.
• You want the included 100W power splitter for USB-A laptops or USB-C laptops without Power Delivery.
• You prefer a simpler DisplayLink deployment with fewer display targets to troubleshoot.
• You want one USB-C accessory port with 18W charging.
• You care more about mixed-fleet certainty than maximum monitor count.

Read the full product pages for the details behind this comparison: Kensington SD4790P review and Kensington SD4782P review. If neither dock fits, the homepage ranks the broader docking station database across Thunderbolt, USB-C, DisplayLink, travel, and workstation options.