An HDMI jointer (also referred to as an HDMI coupler or HDMI adapter) is a device used to join two HDMI cables together. This tool allows you to extend the reach of an HDMI cable by connecting two HDMI cables end-to-end. It essentially functions as a bridge between the male HDMI connectors of two separate cables, so you don't have to use a longer single cable.

Key Features:

• Connector Type: Typically, it features two HDMI female ports, so it works by joining the male ends of two HDMI cables.
• Purpose: The main goal is to extend the length of your HDMI connection without compromising the quality of the signal.
• Use Cases:
  • Extending the HDMI cable when the available one is too short.
  • Connecting two HDMI devices with different cable lengths.
  • Avoiding the need to buy an entire longer HDMI cable.

Types of HDMI Jointers:

1. Standard HDMI Jointers: These join two standard HDMI cables with standard resolutions (1080p, 720p).
2. High-Speed HDMI Jointers: These are designed for higher resolutions such as 4K or even 8K video.
3. Gold-Plated HDMI Jointers: These feature gold-plated connectors for better signal quality and durability.

Considerations:

• Signal Quality: The longer the cable run, the more the signal degrades, so it’s important to choose a high-quality jointer if you plan to extend a long HDMI cable.
• Resolution Support: Ensure that the jointer you select supports the resolution and features (like HDR or 3D) you need.
• HDMI Version: Make sure the jointer supports the HDMI version that is compatible with your devices (e.g., HDMI 1.4, 2.0, or 2.1).

Would you like to know more about where to buy or which types are best for specific needs?