USB C + HDMI to USB C Cable Adaptor

The Kramer C-CU32/UC+H is an active multi-format adapter cable for connecting an HDMI plus USB 3 source, or a USB Type-C laptop source, to a USB-C monitor or switcher. Its male input and USB-C male output configuration supports direct laptop integration in meeting-room signal paths while accommodating different source connection formats.

Ideal Use Cases

This adapter is intended for BYOD meeting rooms where users need to connect a laptop directly to a USB-C monitor. It also suits larger meeting rooms in which a laptop connects to an under-desk USB-C switcher. Kramer specifically identifies the SWT3-31-HU-TR as an example of a compatible switcher application and recommends setting that switcher’s input EDID to 4K@30 4:4:4 when using this connection.

The multi-format design is useful in shared spaces that receive laptops with either USB Type-C connectivity or an HDMI connection accompanied by USB. It gives the room a consistent USB-C connection at the monitor or switcher side while supporting the available source format.

Why Choose This Model

The C-CU32/UC+H combines active conversion and multi-format source support in an adapter-cable format. A laptop can connect through USB Type-C, or through HDMI plus USB 3, with the adapter delivering a USB-C output to the receiving monitor or switcher. This arrangement is particularly relevant when the installed display or switching system accepts USB-C but the source devices presented in the room do not all use the same connector format.

Its support for full USB-C 3.2 features provides a defined connection standard for compatible equipment. When HDMI is selected as the input, the USB 3.2 Type-A connector must also be connected so the adapter can provide the stated USB-C 3.2 functionality.

Installation and Integration

Connect the appropriate male input to the laptop based on the source format. For a USB Type-C source, use the USB-C input connection. For an HDMI source, connect both HDMI and the USB 3.2 Type-A connector. The male USB-C output then connects to the USB-C input of the monitor or switcher.

Power planning is an important part of installation. A device connected to the C-CU32/UC+H USB-C output must have its own power source; the adapter should not be treated as the power source for the connected output device. This requirement applies when selecting and preparing the receiving monitor or switcher.

The adapter is also compatible with the optional PG-U32/FF, sold separately. That accessory is identified for laptops whose USB-C ports are positioned tightly together or where there is a large gap between the laptop port and the desk surface. This compatibility can help address physical connector-access conditions without changing the specified adapter workflow.

Performance Highlights

The listed bandwidth is 10Gbps, and the specified refresh rate is 30Hz. The adapter supports full USB-C 3.2 features when connected according to the selected input method. For HDMI operation, that means using the required USB 3.2 Type-A connection along with HDMI.

In the cited SWT3-31-HU-TR switcher application, Kramer recommends an input EDID setting of 4K@30 with 4:4:4 color sampling. This is a configuration recommendation for that example integration rather than a substitute for checking the settings and capabilities of every device in the complete signal path.

What Makes It Different

The defining feature of the C-CU32/UC+H is its ability to accept more than one laptop connection format while presenting a USB-C output. Instead of being limited to a single source connector, it accommodates either a USB Type-C source or an HDMI plus USB 3 source. Its active design, 10Gbps bandwidth, USB-C 3.2 feature support, and meeting-room focus distinguish it from a basic passive connector adapter.

The documented compatibility with the PG-U32/FF also addresses practical laptop-port placement, including tightly spaced USB-C ports and ports positioned above a substantial gap to the desk surface.

Final Assessment

The Kramer C-CU32/UC+H is suited to meeting-room installations that need to connect USB Type-C or HDMI-equipped laptops to a USB-C monitor or switcher. Its active multi-format design supports 10Gbps bandwidth and a 30Hz refresh rate while retaining USB-C 3.2 features when installed as directed. Integrators should account for the required USB Type-A connection during HDMI use and ensure that every device attached to the USB-C output has its own power source.