# DUD3521 USB-C Dual 4K Display Docking Station

The DUD3521 is a USB-C dual 4K display docking station with four USB-A ports and an SD reader, for analysis, video calls and presentations. HDMI and DisplayPort outputs support two 4K60 displays, it charges laptops at up to 96W, and adds Gigabit Ethernet, a 10Gbps USB-C port with 20W charging and separate audio jacks.

- Model: DUD3521
- Category: Docking Stations
- URL: https://www.goodway.com.tw/products/dud3521-usb-c-dual-4k-display-docking-station-w-quad-usb-a-port
- Last updated: 2026-11-09

The DUD3521 USB-C dual 4K docking station significantly boosts laptop productivity by allowing seamless extension across up to three screens. Equipped with legacy HDMI and DP ports, it supports dual 4K60 displays, ideal for information analysis, video conferencing, presentations, programming, media creation, CAD drawing, and engineering applications. The USB-C uplink provides PD charging of up to 96W for laptops, while the USB-C downlink supports PD20W for powering accessories or charging smartphones. Additionally, the built-in SD4.0 card reader simplifies access to SD storage without an extra adapter. Featuring four USB-A ports, the docking station offers expanded connectivity options for various peripherals. Its horizontal design further enhances desktop cable management and easy placement.

## Dual Display & Enhanced Productivity

- The DUD3521 is a USB-C dual 4K display docking station for laptops that extends your productivity across up to three screens. Featuring legacy HDMI and DisplayPort ports, it supports maximum resolutions of 2×4K60 for a variety of applications including information surveying, video conferencing & presentations, programming, media creativity, CAD drawing, and engineering.

## Versatile Connectivity & Efficient Design

- Equipped with a USB-C uplink that supports PD96W to charge your laptop and a USB-C downlink providing PD20W for accessories and smartphone charging, the DUD3521 keeps you powered and connected. An integrated SD4.0 card reader offers a convenient interface for SD storage access, while its horizontal layout simplifies cable management and desktop placement.

## Specifications

| Model | DUD3521 |
|---|---|
| Upstream Port \(Host\) | 1 × USB-C 10Gbps |
| Host Interface | USB-C |
| Maximum Display | 2 × 4K@60Hz |
| Legacy Video Port | 2 × DisplayPort, 2 × HDMI |
| Max Resolution | 2x 4K60 \(HDMI/DP\) |
| Video Output | DisplayPort, HDMI |
| USB Downstream | 4 × USB-A 5Gbps, 1 × USB-C 10Gbps PD 20W \(charging\) |
| LAN | 1 × RJ45 \(1GbE\) |
| PD | 96W |
| Power Supply | DC 135W |
| Power Mode | Self-Power |
| Audio | 1x 3.5mm TRS Headphone, 1x 3.5mm TRS Microphone |
| Card Reader | SD |
| Dimension \(L x W x H\) | 202.85 x 95 x 32.6 mm |
| Features | Audio, Ethernet, Card Reader, PD Charging |

## Features

- Supports dual 4K60 displays via HDMI 2.0 or DisplayPort 1.2.
- Delivers up to 96W USB-C PD charging for laptops.
- Features four USB-A 5Gbps ports for peripheral connectivity.
- Provides a USB-C 10Gbps port with 20W fast charging.
- Built-in Gigabit Ethernet and SD 4.0 card reader for fast connectivity.
- Compatible with Windows, macOS, and ChromeOS.

## Downloads

- [DUD3521 Datasheet](https://www.goodway.com.tw/api/downloads/file/DUD3521_datasheet.pdf) (SHA-256 12b9854a23f3b48aa525e69be9770bc49dd7ccefc592896123bccf0ae8ea7874)