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CXSW-21H21A-EO 2×1 HDMI 2.1 Switch with eARC/ARC & Audio Breakout – 8K@60Hz / 4K@120Hz

  • 2 HDMI Inputs / 1 Output
    Connect two HDMI 2.1 source devices to a single display with seamless switching.

  • High-Speed 40Gbps Bandwidth
    Designed for next-generation 8K and high-frame-rate 4K video transmission.

  • 8K@60Hz / 4K@120Hz (4:4:4)
    Supports ultra-high-resolution output with full chroma sampling and smooth motion performance.

  • HDR & Dolby Vision Support
    Compatible with HDR10, Dolby Vision, and 3D video formats.

  • HDCP 2.3 Compliant
    Ensures compatibility with protected 8K and 4K premium content.

  • eARC / ARC Pass-Through (Soundbar Support)
    Enables high-quality audio return to soundbars or AV receivers, including Sonos systems.

  • CEC Support
    Allows simplified control between connected HDMI devices.

  • Audio Breakout Function
    Extract digital audio independently for connection to external audio systems.

  • EDID Management
    Optimizes signal compatibility between source devices and display.

  • Auto Switching & Remote Control
    Automatically detects active input or switch manually via IR remote.

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Product Description

The CXSW-21H21A-EO 2×1 HDMI 2.1 Switch is engineered for modern home theaters and gaming setups requiring high-resolution switching with advanced audio support. With up to 40Gbps bandwidth, it supports true 8K@60Hz and 4K@120Hz output, making it ideal for next-generation consoles, streaming devices, and premium 8K displays.

Integrated eARC/ARC pass-through allows direct audio transmission to soundbars and AV receivers, delivering immersive sound formats such as Dolby Atmos. HDR10, Dolby Vision, and HDCP 2.3 compatibility ensure seamless integration with today’s protected content and high-performance displays.

Featuring automatic input detection, EDID management, and IR remote control, the CXSW-21H21A-EO offers reliable and user-friendly HDMI switching for advanced multimedia environments.

Specifications

Model CXSW-21H21A-EO (SW21H21A-EO)
Inputs / Output 2 In / 1 Out
HDMI Version HDMI 2.1
Bandwidth Up to 40Gbps
Max Resolution 8K@60Hz / 4K@120Hz
HDR Support HDR10, Dolby Vision
HDCP HDCP 2.3
ARC / eARC / CEC Supported
Audio Breakout Supported
Control IR Remote & Auto Switch

FAQ

Most frequent questions and answers

ExtendHD solutions work seamlessly with TVs, projectors, monitors, sound systems, and most standard HDMI-enabled devices.

No. Most ExtendHD products are plug-and-play. Advanced units may offer optional PC-based control for customization.

Absolutely. Our products are designed for professional-grade performance, suitable for offices, retail, classrooms, and home theaters.

Depending on the model, our HDMI extenders support distances up to 100 meters using CAT6/7 cables.

We offer dedicated customer support, user manuals, and setup assistance to ensure smooth installation and usage.

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ExtendHD delivers premium AV solutions—designed for seamless connectivity, professional performance, and reliable signal distribution across any environment.