MINIX H4K

MINIX H4K Wireless HDMI Transmitter & Receiver User Manual

Model: H4K

Introduction

The MINIX H4K is a wireless HDMI transmitter and receiver system designed for seamless audio and video transmission. It supports 4K decoding and 1080P@60Hz output, offering a plug-and-play solution for various display needs without the requirement for Wi-Fi, apps, or complex setup. This manual provides detailed instructions for setting up, operating, and maintaining your device.

What's in the Box

  • User Manual x 1
  • USB-A to USB-C Power Cable x 2
  • HDMI Extension Cable x 1
  • Mini HDMI to HDMI Adapter x 1
  • Micro HDMI to HDMI Adapter x 1
MINIX H4K Packing List showing the transmitter, receiver, cables, and adapters
Figure 1: Contents of the MINIX H4K package, including the wireless HDMI transmitter, receiver, power cables, HDMI extension cable, and various HDMI adapters.

Setup Instructions

1. Connect the Receiver (RX)

  1. Connect the USB-C power supply port of the receiver to the charging cable and plug it into a power adapter (Voltage 5V, current 2A).
  2. Connect the HD port of the receiver to the video input port of the display device, such as a monitor or TV.
  3. Adjust the HD Signal source of the monitor or TV until the boot screen is displayed.

2. Connect the Transmitter (TX)

  1. Connect the transmitter to your computer or other device with an HDMI video output function.
  2. After the indicator light on the transmitter enters the fast flash state, wait for approximately ten seconds to complete casting.
Diagram illustrating the four steps for point-to-point connection of the MINIX H4K wireless HDMI system.
Figure 2: Step-by-step connection guide for the MINIX H4K, showing how to connect the receiver to a display and power, and the transmitter to a source device.
Video 1: An official product video from MINIX Technology Limited demonstrating the setup and key features of the H4K Wireless HDMI Transmitter & Receiver.

Operating the Device

Display Modes

The MINIX H4K supports two primary display modes to suit your needs:

  • Mirror Mode: Duplicates your source device's screen onto the connected display. Ideal for presentations or sharing content directly.
  • Extend Mode: Extends your desktop, allowing you to use the connected display as a secondary monitor for multitasking.
Illustration showing Extended Mode and Copy Mode (Mirror Mode) for dual display setups with a laptop and external monitor.
Figure 3: The MINIX H4K supports both Extended Mode for multitasking and Copy Mode (Mirror Mode) for duplicating your screen.

One-Click Disconnect/Reconnect

To disconnect or reconnect the display, simply press the button on the transmitter. This feature ensures privacy and security during presentations or when switching between content sources.

Image showing a hand pressing a button on the MINIX H4K transmitter connected to a laptop, with text 'Disconnect or reconnect With One Click'.
Figure 4: The one-click button on the transmitter allows for quick disconnection and reconnection, enhancing privacy and ease of use.

Key Features

  • Easy Plug & Play Setup: Enjoy instant wireless HDMI connection with no apps, Wi-Fi, or setup required. The MINIX H4K automatically pairs transmitter and receiver in seconds, delivering smooth 1080P@60Hz and 4K decoding.
  • Stable Dual-Band Signal: Featuring a next-gen dual-band chip, the H4K offers strong anti-interference performance and stable wireless streaming up to 50 meters (164 feet). Even in complex environments, the signal remains smooth and reliable for consistent audio and video delivery.
  • Ultra-Low Latency Video: Experience professional-grade image quality with ultra-low delay of under 0.1 seconds. Enjoy synchronized audio and video without lag or distortion.
  • Dual Display Modes: Switch freely between mirror mode and extend mode to suit your needs.
  • Compact & Reliable Design: Lightweight, portable, and engineered for reliability, the MINIX H4K ensures stable operation and long-term durability.
A family watching 4K content on a large TV screen, with a laptop connected to the MINIX H4K wireless HDMI dongle on a coffee table.
Figure 5: The MINIX H4K enables 4K Ultra-HD streaming for an enhanced viewing experience.
A laptop connected to the MINIX H4K transmitter, wirelessly displaying content on a large TV, with icons indicating 'No APP', 'No Driver', 'No Wifi', 'No Bluetooth'.
Figure 6: The device offers a simple Plug & Play experience with rapid auto-sync of screen content.
An abstract depiction of 5G Wi-Fi channels enabling smooth streaming, highlighting stable and low-latency connection.
Figure 7: The 5G band ensures smooth streaming and a stable, low-latency connection.
A hand holding the compact MINIX H4K transmitter, with dimensions (100mm x 33mm x 12mm) shown, next to a laptop bag.
Figure 8: The compact and convenient design of the MINIX H4K makes it easy to carry.

Application Scenarios

The MINIX H4K is suitable for a variety of environments and uses:

  • Business Meetings & Presentations: Share content wirelessly in conference rooms without cable clutter.
  • Educational Settings: Project lessons and educational content in classrooms.
  • Home Entertainment: Stream movies and videos from laptops or other devices to your TV or projector for a home theater experience.
  • Outdoor Use: Connect to projectors for outdoor viewing events.
  • Camera Monitoring: Provides real-time wireless preview from cameras to a larger display.
A collage of four images depicting various application scenarios: Home Theater, Meeting, Outdoor, and Camera screen, all utilizing the MINIX H4K.
Figure 9: Various application scenarios for the MINIX H4K, including home theater, business meetings, outdoor entertainment, and camera monitoring.

Specifications

FeatureDetail
BrandMINIX
Connectivity TechnologyHDMI
Connector TypeHDMI
Special FeatureWireless
Resolution4K
Supported Internet ServicesTV
Controller TypeButton Control
Form FactorTV Stick
ColorBlack
Model NameH4K
Compatible DevicesGaming Console, Laptop, Personal Computer, Television
Video Output Resolution1920x1080 Pixels
Video CodecH.265/HEVC
ManufacturerMINIX Group Company Limited
Item Weight56.8 Grams
Item Dimensions L x W x H3.94"L x 1.3"W x 0.47"H

Maintenance

To ensure optimal performance and longevity of your MINIX H4K, follow these guidelines:

  • Keep the device clean and free from dust. Use a soft, dry cloth for cleaning.
  • Avoid exposing the device to extreme temperatures or humidity.
  • Do not attempt to disassemble or repair the device yourself. Refer to professional service if needed.
  • Ensure proper ventilation around the device during operation to prevent overheating. The device features 52 heat dissipation holes for this purpose.

Troubleshooting

No Signal on Display

  • Ensure both the transmitter (TX) and receiver (RX) are properly powered and connected to their respective devices.
  • Verify that the display device (TV/monitor/projector) is set to the correct HDMI input source.
  • Check if the indicator light on the transmitter is flashing rapidly, indicating it's attempting to connect or is connected.
  • Try disconnecting and reconnecting both units.

Poor Video Quality or Lag

  • Ensure the distance between the transmitter and receiver is within the specified range (up to 50 meters / 164 feet) and there are no significant obstructions.
  • Minimize interference from other wireless devices operating on similar frequencies.
  • Confirm that the power supply for both units meets the required specifications (5V, 2A).

Audio/Video Sync Issues

  • The device is designed for ultra-low latency (under 0.1 seconds). If sync issues occur, try restarting both the source device and the MINIX H4K units.

Warranty and Support

The MINIX H4K comes with a 1 Year Manufacturer Warranty.

For technical support or warranty claims, please contact MINIX Technology Limited through their official channels or refer to the contact information provided in the packaging.

You can also visit the MINIX Store on Amazon for more information and support.

For offline maintenance service, please visit our official website.

© 2026 MINIX Technology Limited. All rights reserved.

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