HDMI1

HDMI1 is a common label used on consumer electronics to identify the first HDMI connection on a device such as a television, computer monitor, AV receiver, or game console. It is not itself a separate standard; rather, HDMI1 refers to a port designation that is defined by the device’s manufacturer. Because labeling varies by brand, HDMI1 can denote an input, an output, or a configurable port depending on the model and mode.

In typical use, HDMI1 is an input on displays, meaning it is a port where you connect video and audio sources such as Blu-ray players, game consoles, or streaming devices. Some devices, however, may reserve HDMI1 for a specific purpose (for example, a primary input, an ARC-enabled port, or a pass-through path). On devices that support HDMI ARC (Audio Return Channel) or CEC (Consumer Electronics Control), the HDMI1 port may also participate in those features if the port and source support them.

HDMI is a digital interface that carries video and audio signals. The actual capabilities of HDMI1—such as resolution, refresh rate, HDR support, and whether features like ARC or Ethernet over HDMI are available—depend on the HDMI version implemented by the device and the capabilities of the connected source. In practice, a connected source will negotiate its format with the display, and higher-end versions enable more bandwidth and features.

If HDMI1 shows no signal, steps include selecting the correct input on the display, ensuring the source device is powered and set to the HDMI output, checking the cable for damage, trying a different HDMI port or cable, and updating device firmware if available.

See also HDMI, HDMI port labeling, HDMI version.