Kramer Electronics SWT3-31-HU HDMI MiniDP VGA USB-C 3840x2160 60 Hz

The Kramer Electronics SWT3-31-HU is a compact high-performance auto-switcher that accepts one USB-C and two HDMI/USB inputs and provides an HDMI output. It is designed for hybrid meeting spaces to enable switching of connected USB peripherals (for example room cameras and microphones) together with AV signals, allowing both local and remote participants to receive shared content. The unit supports resolutions up to 3840x2160@60Hz and a bandwidth of 18 Gbit/s, and includes PoE powering and a fan-less enclosure for flexible installation.

Advantages

The switcher provides controllable coupled switching of AV and USB host inputs so multiple participants can share content simultaneously with room and online attendees. It supports DP‑Alt Mode USB‑C with USB 2.0, Ethernet passthrough and up to 60 W PD charging (when the connected source supports PD‑2.0), HDMI 2.0 features including HDCP 2.3 and deep color, USB 3.1 switching for high data‑rate USB devices, HDMI mirroring for local monitoring, intelligent EDID handling (I‑EDIDPro™), audio de‑embedding to balanced analog output, and various control options including IP, local panel and contact closure. The unit also offers 802.1x network authentication and remote firmware management for secure, maintainable deployments.

Suitable for

• Conference rooms and huddle spaces with hybrid meetings
• Classrooms and lecture halls requiring BYOD presentation support
• Corporate boardrooms integrating room AV and online meeting systems
• Installations needing local monitor mirroring or daisy‑chaining

Key specifications

• Inputs: 1 × USB‑C (DP‑Alt Mode capable), 2 × HDMI/USB
• Output: 1 × HDMI (loop output for mirroring)
• Maximum resolution: 3840 × 2160 @ 60 Hz
• Bandwidth: 18 Gbit/s
• USB: USB 3.1 switching and USB 2.0 passthrough for USB‑C
• HDMI features: HDMI 2.0, HDCP 2.3, deep color, x.v.Color™, CEC, Dolby TrueHD, DTS‑HD, 3D
• Audio: digital pass‑through and balanced analog de‑embedded output
• Powering: PoE via LAN port; PD charging up to 60 W (if source supports PD‑2.0)
• Control: Remote IP, embedded web UI, local panel buttons, contact closure, RS‑232, IR, I/O
• Security & management: 802.1x authentication, remote firmware upgrade
• Dimensions: 190 × 116 × 270 mm (W × D × H); Weight: 0.6 kg
• Certifications: CE, UL, RoHS, WEEE

How to use

Connect presentation sources to the USB‑C or HDMI inputs and connect the HDMI output to the room display. If required, connect space USB devices (camera, microphone, soundbar) to the USB ports. Use a single USB‑C cable to feed AV, USB 2.0, Ethernet and PD power from a DP‑Alt‑Mode capable device. Configure preferred auto‑switching behavior (for example last‑connected input) via the local panel or the embedded web page. Control display power using CEC or serial commands, and mirror the active input to the loop output for a local monitor or daisy chain connection.

Recommendations

For reliable hybrid meetings, use certified HDMI cables and ensure connected USB‑C sources support DP‑Alt‑Mode and PD‑2.0 if you require video and power over a single cable. Enable 802.1x on the device when integrating into managed corporate networks and keep firmware up to date via the embedded web management to maintain security and compatibility.