HDMI AV+USB+GE 100m 2-way PoE Smart Tx & 2x1 Switcher Rx

The Kramer EXT3-21-XR-TR is a high-performance, extended-reach HDBaseT 3.0 solution combining HDMI and USB extension with receiver-side 2×1 switching. It carries HDMI, USB, Ethernet, RS-232, and IR signals over twisted pair while extending uncompressed video up to 100 m (330 ft) over CAT copper cabling at resolutions up to 4K at 60Hz with 4:4:4 color sampling.

Ideal Use Cases

Hybrid meeting rooms are a primary fit. The receiver can make connected USB 3.2 peripherals, such as a room camera and microphone, available to the active USB host. This supports rooms in which local and online participants use shared USB resources while the system changes between hosts.

Long-reach presentation and collaboration spaces also benefit when source-side and receiver-side equipment are separated by up to 100 m. Because the HDBaseT 3.0 transport covers video, USB, Ethernet, RS-232, and IR, the model addresses AV, data, peripheral, network, and control signal paths within the same extender application.

Why Choose This Model

The model provides an uncompressed 4K60Hz 4:4:4 video path across its stated maximum distance. HDR10 support and a 60Hz refresh-rate specification provide concrete video-format guidance, while the listed 1 Gbps Ethernet bandwidth supports network connectivity across the system. These capabilities combine long-distance extension with the documented 4K60, USB, network, and control requirements.

On the receiver side, HDMI and HDBaseT inputs feed an automatic switcher. The HDBaseT input is decoded back into the original signals, and connected USB 3.2 peripherals are switched for use by the active USB host. This pairing of AV input selection and USB host alignment directly serves rooms that alternate between a receiver-side HDMI source and an extended HDBaseT source.

Installation and Integration

The EXT3-21-XR-TR can be set flexibly as a transmitter-side or receiver-side device. In the transmitter role, it converts all input signals into the transmitted HDBaseT 3.0 signal. In the receiver role, it accepts the HDBaseT 3.0 signal and converts it back into the original signals, with HDMI also available as a receiver-side input.

Plan the link around CAT copper cabling over twisted pair and a maximum reach of 100 m (330 ft). The system carries HDMI, USB, Ethernet, RS-232, and IR, allowing each required endpoint to be mapped to its corresponding source, host, peripheral, network, or control connection. Two-way PoE is also identified in the model’s feature set.

Performance Highlights

Video performance is defined by uncompressed transmission up to 4K at 60Hz with 4:4:4 sampling, including HDR10 support. The stated extension reach is up to 100 m (330 ft). Network performance is listed at 1 Gbps, and USB transport extends peripheral connectivity alongside the video path.

Control coverage includes RS-232 and IR, enabling those input signals to be transported through HDBaseT 3.0 and restored by the transmitter-and-receiver process. This creates a combined signal workflow based on the specific interfaces documented for the model.

What Makes It Different

The defining feature of the EXT3-21-XR-TR is the way extension and switching meet in one model. The receiver is not limited to decoding an HDBaseT feed; it also includes an HDMI input and operates as an auto-switcher. At the same time, USB 3.2 peripherals can follow the active USB host, keeping the selected host aligned with shared room devices.

Flexible transmitter-side or receiver-side configuration adds another layer of deployment choice. Combined with two-way PoE, HDBaseT 3.0 transport, 4K60 4:4:4 video, specified 1 Gbps Ethernet, and RS-232 and IR signal carriage, this role flexibility creates a focused solution for extended AV and hybrid meeting signal paths.

Final Assessment

The EXT3-21-XR-TR is best matched to systems requiring 100 m HDBaseT 3.0 extension plus receiver-side source and USB host switching. Choose it when the required signal plan includes uncompressed 4K60 4:4:4 video, HDR10, USB and switchable USB 3.2 peripherals, 1 Gbps Ethernet, RS-232, IR, automatic HDMI and HDBaseT input selection, flexible endpoint roles, and two-way PoE.