https://cablematic.com/en/products/2-port-4k-hdmi-bi-directional-gembird-selector-GB772/
2-Port 4K HDMI Bi-Directional Gembird Selector
- Gembird DSW-HDMI-21: Bidirectional HDMI selector, two inputs, one output or one input two outputs.
- Ideal for: televisions, projectors, computers and video game consoles.
- Features: Excellent signal-to-noise ratio for a crisp, clear image, Premium quality material, Rugged housing for long life.
- Dimension: 54mm width, 52mm depth and 20mm height.
- Connections: female HDMI host interface, HDMI output interface.
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- Gembird DSW-HDMI-21: Bidirectional HDMI selector, two inputs, one output or one input two outputs.
- Ideal for: televisions, projectors, computers and video game consoles.
- Features: Excellent signal-to-noise ratio for a crisp, clear image, Premium quality material, Rugged housing for long life.
- Dimension: 54mm width, 52mm depth and 20mm height.
- Connections: female HDMI host interface, HDMI output interface.
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More info
Gembird's high quality HDMI selector. It is designed to connect audio and video devices with a female HDMI host interface to an HDMI output device. It is equipped with a female HDMI host interface and an HDMI output interface. This means that it is compatible with all devices with HDMI output, such as TVs, projectors, computers and game consoles. The adapter is a high-quality device, with an excellent signal-to-noise ratio for a crisp, clear image. It is made of premium quality material, with a strong casing for long life. With a width of 54mm, a depth of 52mm and a height of 20mm, this adapter is lightweight and easy to transport. It is available in black. It is equipped with a 5V power supply for optimal performance. It comes with a package containing 1 piece(s) with a width of 25mm and a depth of 120mm. Manufactured by Gembird with reference DSW-HDMI-21.
Specifications
- Gembird DSW-HDMI-21: Bidirectional HDMI selector, two inputs, one output or one input two outputs.
- Ideal for: televisions, projectors, computers and video game consoles.
- Features: Excellent signal-to-noise ratio for a crisp, clear image, Premium quality material, Rugged housing for long life.
- Dimension: 54mm width, 52mm depth and 20mm height.
- Connections: female HDMI host interface, HDMI output interface.
- Compatible with: all devices with HDMI output.
- Technology: 5V power supply.
- Package: contains 1 piece(s) with a width of 25mm and a depth of 120mm.
- Colour: black.
- Gross Weight: 50 g
- Product size (width x depth x height): 5.4 x 5.2 x 2.0 cm
- Number of packages: 1
- Packages size: 18.0 x 12.0 x 2.5 cm
Technical terms
- HDMI
HDMI (High-Definition Multimedia Interface) is a digital interface standard designed for the simultaneous transmission of uncompressed audio and video streams from a compatible source to a digital display or receiver.
This interface employs Transition-Minimized Differential Signaling (TMDS) to maintain data integrity at high frequencies. Throughout its revisions, HDMI has evolved from a basic digital video solution into a complex data bus capable of carrying 4K signals at 60Hz, dynamic metadata, and bidirectional control protocols between devices.
| Version | Bandwidth | Audio/Video Support |
|---|---|---|
| 1.0 - 1.2 | 4.9 Gbit/s | 1080p @ 60Hz, 8 LPCM channels |
| 1.3 - 1.4 | 10.2 Gbit/s | 4K @ 30Hz, Deep Color, ARC, Ethernet |
| 2.0 | 18.0 Gbit/s | 4K @ 60Hz, 32 audio channels, HDR |
The mass adoption of the HDMI standard has transformed the interconnect architecture in multimedia data centers and high-performance workstations. Its ability to integrate Audio Return Channels (ARC/eARC) and Ethernet connectivity (HEC) has drastically simplified structural cabling, eliminating the need for multiple redundant analog and digital cables while ensuring signal integrity over significant distances through active equalization.
CEC Control and Multi-Streaming Integration
A critical innovation in version 2.0 is the ability to deliver simultaneous dual video streams on the same screen and up to four independent audio streams, optimizing bandwidth for multi-user applications.
Key Advantages
- Pure digital transmission avoiding D/A signal degradation.
- Full backward compatibility across all standard versions.
- Native support for high-resolution audio formats like Dolby TrueHD and DTS-HD.
- Support for 21:9 cinema aspect ratios and dynamic lip-sync.
Note: Final interface performance is dependent on the cable certification (Standard, High Speed, or Premium High Speed).
