New and Improved Triple Display Dock

Instantly turn your Windows, ChromeOS, or Mac laptop into a multi-monitor desktop—by connecting a single cable—with the Plugable Triple HDMI USB-C Docking Station (UD-3900PDZ).

The Plugable UD-3900PDZ charging docking station connects to a supported system using the included USB-C cable and provides the ability to connect up to three additional HDMI displays, provides up to 60W of USB-C Power Delivery, six USB 3.0 ports, a wired Gigabit Ethernet port, and 3.5mm combination analog audio input/output jack. Utilizing innovations introduced with USB 3.1, this 3 HDMI docking station takes advantage of "Alternate Modes" from the USB-C specifications for one of the display outputs and host charging.

When attached to a fully compatible USB-C, USB4 or Thunderbolt system, this laptop docking station supports Windows 10 and 11+, macOS 11+, and Intel or AMD Chromebooks with ChromeOS 100+. Linux is not supported.

This DisplayLink dock has been designed from the inside out to provide a triple-display experience that people can rely on. Lots of display link docking stations on the market have issues with monitors losing connection, the dock rebooting, flickering, and more. This dock represents our focus on quality and our 10+ years in the docking station market. As with all Plugable products, you can be assured we're committed to quality, ranging from chipset selection to extensive compatibility testing to top-tier manufacturing.

Charge

The UD-3900PDZ provides 60W charging to laptops that support Power Delivery via their USB-C / Thunderbolt ports.

Typically 60W is sufficient for charging compatible systems. While most laptops will charge seamlessly, some models may benefit from using their original power cord if they require higher charging rates.

Display

1x HDMI (Alt Mode) up to 4K 30Hz (lower resolutions up to 60Hz)
2x HDMI (DisplayLink) up to 1920x1200 @ 60Hz each

With one USB-C (USB Type-C) cable connected to the dock, overcome the limited number of display outputs and ports on your device. This dock connects up to three HDMI displays on supported devices, and works as a mac triple display docking station on systems that would otherwise only support a single monitor, like Macs with base M1/M2/M3 chips.

HDMI 1 supports resolutions up to 4K 30Hz. HDMI 2 and HDMI 3 support resolutions up to 1920x1200 @ 60Hz each

Connect

6x USB 3.0 Ports 1x Gigabit Ethernet 1x 3.5mm TRRS Headset Port Many laptops are removing or drastically reducing the number of ports available. Get back your USB, audio, and network connections. This dock also makes it easy to leave your peripherals plugged in at your main work area, and reconnect them, with one cable from the dock.

Windows and Newer Macs

Windows 11, 10, 8.x, and 7 are supported.

Intel and M1 Thunderbolt 3 Macs with macOS 10.14.x, 10.15.x, 11.x, 12.x are supported

Windows and Mac users can download DisplayLink drivers from Plugable that are verified to provide the best experience

Windows drivers can also be installed by Windows Update (with existing Internet connection)

Software and Hardware

DisplayLink software installation required, this installation requires administrative permissions, we recommend contacting your system administrator if you do not have permissions to install this software before purchasing the docking station.

USB-C DisplayPort Alternate mode relies on the computer's graphics controller, we recommend keeping the Graphics Drivers and system UEFI/BIOS updated per the system manufacturer's recommendations for best results.

Unsupported Platforms

Apple macOS 10.13 and earlier, Chrome OS (Chromebooks) version 99 or earlier, and Linux are not supported.

Hardware Compatibility Notes

USB-C is a new standard with much versatility. As a result, compatibility information is complex. Some USB-C systems support Alt Mode video output, while others do not. Some can be powered and charged through USB PD, while others do not. It is very important to check the compatibility of your device before purchase.

In the Box
1x Plugable Triple HDMI USB-C Docking Station (UD-3900PDZ)
1x 1m USB-C to USB-C Cable With eMarker
1x 90W (20V 4.5A) Power Supply (90V-240V) With US Power Plug (UL 60950-1 Listed)
1x Quick Start Guide

Port Features, Limitations, Notes, and Terminology

USB-C Alternate Mode (Alt Mode) is a new feature introduced with USB 3.1, allowing USB-C ports and cables to carry video signals directly from a device over a USB cable. Alt Mode video comes directly from the graphics card or integrated graphics processor on a device, meaning outputs from an Alt Mode video port have the full graphics acceleration of your system. Not all systems with USB-C support this functionality.

HDMI 1 (Alt Mode) allows for a maximum output resolution of 4K 30Hz (3840x2160 @ 30Hz). Lower resolutions such as 1920x1200, and 1920x1080 (1080p) are supported at 60Hz. The HDMI 1.4 connection on this dock is provided by converting DisplayPort Alt Mode to HDMI 1.4.

HDMI 2 and 3 (DisplayLink) allows for a maximum output resolution of 2K 60Hz (1920x1200 @ 60Hz). The HDMI 1.3 connection on this dock is provided by the DisplayLink DL-3900 USB graphics chipset.

DisplayLink is a technology that allows compressed data of various types to be sent over USB data connections. The DisplayLink DL-3900 chipset in this docking station connects all the data and video connections, other than the "4K" HDMI 1.4 connection, on this dock.

There are a few important limitations of DisplayLink technology. DisplayLink uses a proprietary compressed video stream that is partially generated by both your computer's CPU and GPU, and is a "virtual" video adapter. Because the video is compressed and packetized as data, then reassembled by the DisplayLink chip, the pacing of new frames of video can be inconsistent, particularly if large portions of the content being sent through DisplayLink is changing (such as with video playback).

Because of how DisplayLink provides video, video outputs provided by DisplayLink technology should only be used to display content like office applications and web browser windows, not games or video content.

HDCP is not supported, this means protected content such as Netflix, Amazon Video, YouTube Premium, Hulu, Blu-ray videos, and other protected content, either may not work or will play at a lower resolution, depending on the content provider.

Some USB-C ports Windows Laptop computers are labelled as Thunderbolt 3 ports. Thunderbolt 3 ports are USB-C ports with additional functionality that are also compatible with this docking station.

USB-C Power Delivery (USB-C PD) is a standard introduced with USB-C that provides enough power for many mobile devices and laptops. This dock is able to supply up to 60W of power to a host. Some laptops may require more power than this. The Dell XPS 15 9550/9560 and Precision 5510/7510, for example, will display a warning during boot if connected to a 60W power adapter, rather than a Dell 130W power adapter. These systems may still charge, but at a slower rate and the battery may discharge under heavy system loads.