This article covers WAVLINK 4Kモニター用のUSB C₋HDMI.

Overview

The WAVLINK DL-7400 is a versatile multi-display adapter that lets you connect up to four external monitors using a single USB-C or USB-A port on your laptop or desktop. It features two HDMI ports and one DisplayPort, supporting quad-display setups with resolutions up to 4K@30Hz over HDMI and up to 120Hz over the DisplayPort. A standout feature is the integrated 85W USB Power Delivery pass-through, which charges your notebook while driving video output. The adapter is compatible with Windows, macOS, and Chrome OS, and works plug-and-play without additional drivers on most systems. This adapter targets users who need more screen real estate but don't want to invest in a full docking station. It relies on the host's built-in GPU and USB-C Alt Mode or DisplayPort MST capabilities, so it's not a universal solution for every device. Still, for the majority of modern laptops, it offers a clean, cable-minimized way to add two or three extra displays.

Connectivity & Compatibility

Host Interface: USB 3.0 Type-A / Type-C (USB-C Alt Mode required for video and PD) Video Outputs: 2× HDMI (max 4K@30Hz), 1× DisplayPort (max 120Hz) Compatible OS: Windows 7/8/8.1/10/11, macOS 10.10+, Chrome OS Supported Devices: Laptops, Ultrabooks, and desktop PCs with USB-C or USB-A ports Max Displays per Host: Windows up to 8 (each adapter counts as one display), macOS up to 6 Charging Output: USB PD 85W (depends on host's power delivery capability) Connection is straightforward: plug the adapter's integrated cable into your computer, then connect monitors to the HDMI and DP ports. Note that the adapter itself supports up to two external displays (dual HDMI or HDMI+DP) simultaneously. To achieve four external displays, you need two DL-7400 adapters. For Mac users, MST (Multi-Stream Transport) support is required for multiple displays; Apple Silicon Macs may be limited to a single external display unless using DisplayLink alternatives.

Product Info

The WAVLINK DL-7400 was released around 2024 and is priced at approximately ¥23,500 (tax included) on Japan, positioning it in the mid-range segment. It comes with the adapter, a USB-C to USB-A converter, and a manual. Warranty is typically one year. The primary purchase channel is , but it can also be found on the manufacturer's official store. Market positioning: Compared to other USB-C hubs in the same price bracket, the DL-7400 stands out for its 85W PD charging and 120Hz DP support. However, it lacks a DisplayLink chip, so compatibility with Mac's multiple display modes is limited. It's best suited for Windows users who need a cost-effective multi-monitor solution without the bulk of a full docking station.

Best Use Cases

Laptop users needing a compact multi-monitor setup Ideal for remote workers or freelancers who want to connect two external monitors and charge their laptop through a single USB-C cable. The 85W PD is enough for most 13–15 inch notebooks. Frequent presenters and meeting attendees The small form factor makes it easy to carry, and you can quickly connect to projectors or large displays in conference rooms. Mirror or extend the screen as needed. Content creators who benefit from extra screen space Video editors, graphic designers, and stock traders can use multiple windows simultaneously. The 120Hz DP port provides smoother cursor movement and video playback compared to 60Hz HDMI. Who should avoid this product Mac users with Apple Silicon (M1/M2/M3) may find that only one external display works due to MST limitations. Also, gamers looking for high refresh rates above 120Hz will be disappointed by the HDMI 4K@30Hz cap. For those scenarios, a DisplayLink adapter or a full Thunderbolt dock would be more appropriate.

Product Disclosure (Amazon)

  • Manufacturer: Lian Li
  • Seller: ISLANDLITTLE
  • Fulfilled by: ISLANDLITTLE
  • ASIN: B0GX5D2FHW
  • Note: This article covers a manufacturer-made product based on Amazon listing details.