The Kramer SWT3-21-HU-TR brings a USB-C laptop and an HDMI source into a shared presentation and conferencing system. It switches video and the associated USB host connection, helping the active presenter use compatible room peripherals. Its configurable HDBaseT 3.0 port lets the unit work at either end of an extension link, with a published reach up to 40m using Kramer HDBaseT cables.
SWT3-21-HU-TR Features
- Connect different presenter devices: One USB-C input and one HDMI input provides two local presentation choices. HDMI computers use separate USB host connections when peripheral sharing is needed.
- Keep video and USB together: Switch the active presentation source along with access to compatible room cameras, microphones, and other USB devices, supporting meetings with local and remote participants.
- Extend detailed 4K content: HDBaseT 3.0 carries video up to 4K60 4:4:4 over a link up to 40m with the specified cabling and compatible receiving equipment.
- Choose transmitter or receiver operation: Configure the HDBaseT port direction for the installation. In transmitter mode, the selected source can also appear on the local HDMI output.
- Charge a compatible laptop: USB-C supports up to 60W of charging when the unit is powered by its 20V supply. The laptop must support the required video and power capabilities.
- Automate source selection: Choose automatic switching by source priority or last-connected source. Display control can use CEC or serial commands in a configured system.
- Connect local and remote peripherals: The local USB 3.2 interface supports up to 10Gbps. The HDBaseT extension path carries USB 2.0 rather than extending the full local USB 3.2 speed.
- Connect a room sound system: A balanced analog stereo output provides extracted audio for an external DSP or other compatible audio equipment.
- Integrate room control: RS-232, IR, GPIO, and CEC control options support integration with a configured room system.
Specifications
| Manufacturer part number | 20-80604090 |
|---|---|
| Local presentation inputs | 1 USB-C; 1 HDMI |
| Video outputs | HDMI plus configurable-direction HDBaseT |
| Maximum video | 4K60 4:4:4; 18Gbps |
| HDBaseT generation and reach | HDBaseT 3.0; up to 40m with Kramer HDBaseT cables |
| Content protection | HDCP 2.3 |
| Local USB | USB 3.2 Gen 2, up to 10Gbps; 3 Type-A device ports |
| Extended USB | USB 2.0; transmitted data bandwidth up to 300Mbps |
| Audio output | Balanced stereo, 5-pin terminal block |
| USB-C charging | Up to 60W with the 20V power supply |
| Included accessories | 20V adapter and cords; USB-C multi-signal cable |
| Shipping size (W × D × H) | 13.82 × 8.35 × 2.83 in |
| Shipping weight | 3.2 lb approx. |
Technical Questions and Answers
How many local video sources can be connected?
It has one USB-C video input and one HDMI input, for two local presentation sources.
What video format can the extension link carry?
The unit supports up to 4K at 60Hz with 4:4:4 color, over a published distance up to 40m using Kramer HDBaseT cables and compatible equipment.
Can it operate as either a transmitter or a receiver?
Yes. The HDBaseT port direction is configurable. The unit can be installed at the source end or display end as required.
Can a laptop be charged through USB-C?
Yes, up to 60W when the switcher is powered by its 20V supply and the connected laptop and cable support the required USB-C functions.
Does USB 3.2 run at full speed across HDBaseT?
No. Local USB supports up to 10Gbps, while the extension path is USB 2.0 with published transmitted bandwidth up to 300Mbps.
Can it select a source automatically?
Yes. Automatic switching can use source priority or the last-connected source. The selection behavior is configured for the installation.
Is an analog audio output available?
Yes. A balanced stereo output on a 5-pin terminal block makes de-embedded audio available to a separate sound system.
Can the local HDMI output mirror the transmitted picture?
Yes. In transmitter mode, the selected presentation source can be sent through HDBaseT and mirrored on the local HDMI output.
Choosing the Right Product
What is the Kramer SWT3-21-HU-TR used for?
It combines 2 local USB-C/HDMI presentation sources with video extension and USB peripheral switching for meeting rooms and teaching spaces.
How does it help with hybrid meetings?
The active presenter can share content and use compatible room USB equipment through one coordinated system, including peripherals on a compatible extension endpoint.
What should I check before choosing this switcher extender?
Check the number of presentation sources, the 40m cable-distance limit, compatibility of the other HDBaseT endpoint, USB peripheral bandwidth, and laptop charging requirements.
