Kramer SWT3-31-HU – 3x1 4K60 USB-C/HDMI Auto Switcher
Kramer SWT3-31-HU – 3x1 4K60 USB-C/HDMI Auto Switcher is backordered and will ship as soon as it is back in stock.
Kramer SWT3-31-HU – 3x1 4K60 USB-C/HDMI Auto Switcher
What is the Kramer SWT3-31-HU switcher?
The Kramer SWT3-31-HU is a 3x1 4K60 auto-switcher with one USB-C input and two HDMI/USB inputs feeding an HDMI output. It also switches connected USB peripherals, such as a room camera and microphone, to whichever host is active, making it a compact BYOD hybrid meeting switcher for huddle spaces and small meeting rooms.
How does the Kramer SWT3-31-HU work?
Users connect a laptop by USB-C (DisplayPort Alt Mode with USB Power Delivery 3.0 charging up to 60W) or by HDMI with a USB host cable. The SWT3-31-HU auto-switches to the active source and routes its USB 3.2 hub, with four device ports for the room camera, microphone and speakerphone, to the same host. The presenter gets the display and the room's conferencing peripherals with one connection, which is the core of a simple hybrid room.
Video switches at 4K@60Hz 4:4:4 with 18Gbps bandwidth and HDCP 2.3, with Kramer I-EDIDPro EDID handling and HDMI mirroring. Output audio is de-embedded to a balanced stereo line output. Display on/off control, a built-in intelligent control gateway with RS-232, IR and GPIO, and a secured Ethernet connection support automation and remote management. The fan-less aluminum enclosure ships with a 20V DC power adapter.
For larger rooms that need extension to a distant display, the Kramer EXT3-21-XR-TR HDBaseT 3.0 switcher extender is a related option. Connect sources with Kramer C-MHM/MHM HDMI cables.
What are the key features of the Kramer SWT3-31-HU?
- Hybrid-meeting switching — USB peripherals follow the active host for Teams, Zoom and similar apps.
- USB-C with 60W charging — One-cable video, USB and power for laptops.
- Three inputs — One USB-C and two HDMI/USB inputs for BYOD flexibility.
- USB 3.2 switching — Integrated hub with four USB 3.2 device ports.
- 4K60 4:4:4 video — 18Gbps switching with HDCP 2.3 and I-EDIDPro.
- Audio de-embedding — Balanced stereo line output for room audio.
- Display on/off and control gateway — Automates display power and controls devices via RS-232, IR or GPIO.
- Fan-less design — Silent aluminum enclosure suited to under-table installation.
Where is the Kramer SWT3-31-HU typically used?
- Huddle room
- Conference room
- Training room
- Commercial meeting space
Technical Specifications
| Inputs | 1 USB-C (DP Alt Mode, PD 3.0); 2 HDMI |
| Outputs | 1 HDMI; 1 balanced stereo audio line; 1 IR |
| Ports | USB 3.2 host ports; 4 USB 3.2 device; 1 Ethernet; 1 RS-232; 2 GPIO |
| Max Resolution | 4K@60Hz (4:4:4) |
| Max Data Rate | 18Gbps (6Gbps per graphic channel) |
| Content Protection | HDCP 2.3 |
| USB | USB 3.2 Gen 2, 2.0 and 1.1 |
| Power | 20V DC, 6A adapter (included); max power 84W; USB-C charging up to 60W |
| Enclosure | Aluminum, fan-less |
| Dimensions | 7.48" x 4.57" x 1.06" (W, D, H) |
| Weight | 1.2 lbs (0.6 kg) approx. |
Frequently Asked Questions
Does the SWT3-31-HU switch USB cameras and microphones?
Yes. Connected USB peripherals are switched to the active USB host, so the presenting laptop uses the room's conferencing devices.
Can it charge a laptop over USB-C?
Yes, the USB-C input supports USB Power Delivery 3.0 charging up to 60W.
What video formats are supported?
Up to 4K@60Hz 4:4:4 at 18Gbps, with HDCP 2.3.
How is it controlled and integrated?
It supports Ethernet control, RS-232, IR and GPIO, and can turn the display on and off automatically. See the Kramer collection for matching room control products.
What warranty and support are available?
The switcher carries Kramer's manufacturer warranty. Creation Networks designs, installs and supports hybrid rooms built around it; contact us for current warranty terms.
At Creation Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.
- Most in-stock orders placed Monday-Friday ship within 24-48 hours. General restrictions apply; please see our full shipping policy here.
- We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.
Nationwide Audiovisual Services, Design, Installation & Support
Creation Networks is a trusted nationwide partner for complete audiovisual solutions — delivering expert AV system sales, professional design, programming, installation, and ongoing support to organizations across the United States.
From Microsoft Teams Rooms and enterprise video conferencing to LED video walls, live streaming production, and hybrid collaboration systems, we provide end-to-end AV integration using premium, certified technology from industry leaders including Crestron, Q-SYS, Shure, Extron, and Absen.
Whether you operate a single location or manage facilities nationwide, Creation Networks ensures your AV systems are designed for reliability, scalability, security, and long-term performance — helping your organization communicate more effectively and operate at peak efficiency.
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