Plugable USB 3.0 Dual 4K Display Horizontal Docking Station — High-performance dual 4K docking solution for laptops

Overview

The Plugable USB 3.0 Dual 4K Display Horizontal Docking Station connects two 4K monitors, wired Ethernet, USB devices and a headset to a laptop through one USB 3.0 Type-A port.

The short answer: it is still a practical choice for Windows laptop users who want two screens for spreadsheets, browsers, coding and other office work. It is not for Mac users, gamers, video editors, or anyone who wants to charge the laptop over the same cable.

The dock uses DisplayLink. Instead of sending video straight from the laptop's GPU, a driver compresses the screen image, sends it over USB, and a chip in the dock turns it back into video.

This lets even older laptops without USB-C or Thunderbolt run two 3840x2160 displays at 60Hz over DisplayPort. The cost is extra CPU load and weak handling of fast-moving content.

Almost every strength and weakness of this dock comes from that design.

The horizontal body measures 241 x 83 x 32 mm and weighs 332 g. It runs from the included 20V DC adapter, so your peripherals don't depend on how much power the laptop's USB port can supply.

On Amazon.co.Check the retailer's page for the latest user reviews.

Compatibility Guide

Check these four things before buying.

The OS requirement matters most. macOS, Linux and ARM-based Windows (such as Snapdragon laptops) are not supported.

The listing only goes up to Windows 10/8.1/7, so check the product page or the DisplayLink driver support list before using it on Windows 11.

You install the driver once. If the displays start misbehaving after a major Windows update, reinstalling the latest driver often fixes it.

There are two DisplayPort (DP++) outputs and no HDMI port. Because they are DP++, passive adapters (sold separately) can drive HDMI, single-link DVI or VGA monitors.

If you want 4K at 60Hz over HDMI, make sure the adapter supports 4K@60Hz. Cheap adapters often top out at 4K@30Hz, and people end up blaming the dock for the adapter's limit.

The safest setup is a monitor with DisplayPort input and a direct DP cable.

Supported modes are two 4K displays at 60Hz, or one 5K (5120x2880) display at 60Hz. 2560x1440 and 1920x1080 monitors work fine too.

5K only works with certain monitors and connection setups, so compare your monitor's input specs with Plugable's guidance before counting on it.

Everything shares the USB 3.0 bandwidth (5Gbps). DisplayLink compression makes dual 4K possible, but large copies to an external SSD, big downloads over Ethernet and lots of on-screen motion at the same time can slow something down.

This rarely matters for office work, but keep it in mind if you use storage through the dock all the time.

Product Info

rmation

In the box: the dock, a USB 3.0 A-to-B cable, a power adapter and a quick-start guide.

It came out around 2019 and is still sold on Amazon and elsewhere.

On Amazon.co.Check the retailer's page for the latest price. Sales can bring it down noticeably.

At this price it costs more than a USB-C hub and less than a Thunderbolt dock. The price makes sense when your laptop has neither USB-C video output (Alt Mode) nor Thunderbolt, and you want two 4K screens at 60Hz. If your laptop has Thunderbolt 3/4, a dock in a similar budget can send video straight from the GPU, and that usually works more smoothly.

How It Differs from Other Docks

Laptop docks fall into three groups based on how they send video. Which one fits you mostly depends on which ports your PC has.

DisplayLink's biggest advantage is that it works with almost any host port. USB-C Alt Mode and Thunderbolt let the GPU draw the screen directly, so they handle video and games better and don't add CPU load.

However, many USB-C hubs can only mirror the same image to a second monitor, depending on the Mac or PC. If you want two separate screens on Windows, a DisplayLink dock like this is a simple answer.

Who Should Buy

• Owners of older Windows laptops who want a two-screen desk: Laptops from a few years ago with no USB-C or Thunderbolt can still run two 4K screens, as long as they have a USB 3.0 Type-A port. It is a cheap way to get more screen space without buying a new PC.
• Office workers who keep spreadsheets, documents and email side by side: Excel, browsers and chat apps run fine over DisplayLink. On text-heavy screens, the space of two 4K monitors pays off directly.
• Developers and IT staff: You can give the editor, terminal, docs and database tools their own screens. Text-focused screens change little, which avoids DisplayLink's weak spots.
• People who dock a laptop at a home desk every day: Leave the monitors, Ethernet, keyboard, mouse and webcam plugged into the dock, and the laptop joins the setup with one USB cable. Wired Ethernet also helps keep video calls stable.

Before You Buy

It is not for gaming, video editing or 3D work. DisplayLink uses the CPU to compress the screen, so fast-moving content tends to stutter, lag and push CPU usage up.

If you plan to game, edit video or run 3D CAD on the external screens, choose a Thunderbolt dock or a USB-C connection that sends video straight from the GPU. Long full-screen video sessions can also show the flaws.

Be careful with copy-protected video. Depending on the streaming service or player, protected video on DisplayLink screens may not show or may play at lower quality.

If watching streaming video on the external monitors is your main goal, check first that your service plays on a DisplayLink setup.

It cannot charge your laptop. There is no USB Power Delivery, so the dock can't power the laptop.

You still need the laptop's own charger, so plan your desk around two cables (USB and power), not one.

It won't work on Macs or Snapdragon laptops. Only Windows is supported, and ARM Windows is excluded.

Even on a Windows work laptop, it won't work if you aren't allowed to install drivers. If you'll use it on a company PC, check whether you need approval from IT first.

Plugging into a USB 2.0 port slows it down a lot. It still works, but the display becomes much slower.

Make sure the host port is USB 3.0 (often blue or marked SS) before connecting.

Check the listing details too. In this data, one price source was labeled Amazon US, but the link actually went to Amazon.co.jp.

Store listings and seller labels are sometimes wrong, so confirm the product by its photos, name and specs (two DisplayPort outputs, USB 3.0 Type-A host connection).

Don't confuse it with similarly named USB-C or HDMI models.

FAQ

Q. Does it work with a MacBook? A.

No. The supported OS list is Windows 10/8.1/7, and macOS is not supported.

For multiple monitors on a Mac, look for a product that clearly states Mac support.

Q. Can I connect HDMI monitors? A.

Yes. The outputs are DP++, so passive adapters (sold separately) work with HDMI monitors.

For 4K at 60Hz, make sure the adapter supports 4K@60Hz.

Q. Can this dock charge my laptop?
A. No. It doesn't support USB PD, so power the laptop with its own charger.

Q. Can I game on the external monitors? A.

We don't recommend it. DisplayLink handles fast motion poorly and tends to stutter or lag.

For gaming, choose a Thunderbolt dock or a direct GPU connection.

Q. Will it work on a laptop with only USB-C? A.

The listing says the PC needs a USB 3.0 Type-A port.

It may work through a USB-C adapter, but check the product page for official support. On a USB-C-only PC, a dock made for USB-C is the safer choice.

Product Disclosure (Amazon)

• Manufacturer: Plugable
• ASIN: B07CRSH25X
• Note: This article covers a manufacturer-made product based on Amazon listing details.