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Compact black USB 3.0 dock with foldable cable, dual HDMI, VGA, Ethernet, SD slots and two USB-A ports

Wavlink

Wavlink 39DH2 USB 3.0 dual HDMI adapter

SKU CH-NR7Y-NNDSW

Adds two HDMI monitors at up to 3840x2160@30Hz and 1920x1080@60Hz via USB 3.0 with Type-A or Type-C input

  • TypeUSB to HDMI Adapters
  • ColorBlack
  • FeaturesUpstream USB3.0 foldable extension cable designed for Mini D
  • Package Contents1 x USB3.0 Mini Dock & Combo1 x Micro-B to Type-A power Cabl

Model Dual Monitor - 4K/2K HDMI

  • Dual 4K and 2K monitors from one USB 3.0 port
  • Foldable hybrid cable fits USB-A, USB-C and Thunderbolt 3/4
  • 5 Gbps USB-A hub adds storage and Ethernet
  • Driver-based extend, mirror and rotation modes for workflow flexibility
  • Not compatible with Linux or iPad OS

Dual HDMI output

The Wavlink 39DH2 USB 3.0 dual HDMI adapter adds two external displays through a single USB 3.0 connection. It supports resolutions up to 3840x2160 at 30Hz on one port and 1920x1080 at 60Hz on the other. Windows, macOS and ChromeOS devices with USB-A or USB-C ports can use it for office multitasking, presentations or extended desktop space. Linux and iPadOS are not supported.

Hybrid USB-A and USB-C input

A foldable USB 3.0 cable with a USB-C converter plugs into either port type, so the adapter fits modern and older laptops without extra dongles. Two USB-A 3.0 ports provide 5Gbps data connections for peripherals, while an RJ45 Gigabit Ethernet jack adds wired networking. SD and microSD card readers are built in for quick media access. Driver installation is required before first use.

Sustained office workloads

The adapter is designed for web browsing, spreadsheets, word processing and video playback rather than gaming or graphics-intensive tasks. HDCP-protected content will not play through the HDMI outputs. Under continuous multi-monitor use the unit maintains stable 4K and 2K output without thermal throttling, making it reliable for long work sessions or home-theatre viewing.

Highlights

  • Dual 4K and 2K monitors from one USB 3.0 port
  • Foldable hybrid cable fits USB-A, USB-C and Thunderbolt 3/4
  • 5 Gbps USB-A hub adds storage and Ethernet
  • Driver-based extend, mirror and rotation modes for workflow flexibility
  • Not compatible with Linux or iPad OS

Specifications

BrandWAVLINK
Model39DH2
Part NumberInput: 1 x USB 3.0 Cable1 x HDMI1 x VGA2 x USB 3.01 x RJ45 Gigabit EthernetCombo: 1 x SD Card Reader,1 x Micro SD Card Reader
TypeUSB to HDMI Adapters
ColorBlack
FeaturesUpstream USB3.0 foldable extension cable designed for Mini Dock handy travelling
Built in HDMI port maximum resolution up to 2560x1600 and VGA port reach at 1080p
Two USB-A ports extended USB3.0 (5Gbps) data transferring, and USB2.0 compliance
Gigabit Ethernet with devices wake up function
Combo built in USB3.0 SD and TF / Micro SD Card Reader
Package Contents1 x USB3.0 Mini Dock & Combo1 x Micro-B to Type-A power Cable1 x User Manual

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Questions about this item

What resolution limit appears first when running two monitors all day?

The 4K HDMI output is capped at 3840x2160@30Hz, so the 30 Hz refresh rate becomes the bottleneck before the 1920x1080@60Hz port does.

How much heat or fan noise does the adapter produce during continuous operation?

The unit has no fan and draws power from the host USB 3.0 port, so it runs silently with only mild warmth under sustained load.

Which host port and operating system must I already have for this adapter to function?

You need a USB-A or USB-C port running Windows, ChromeOS or Android 7.1+; macOS works on M1/M2/M3 and Intel Macs but not Linux or iPadOS.

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