Insignia™ - USB to HDMI Adapter - Black - Open Box - Excellent

Thank you for your inquiry! The Insignia™ USB to HDMI Adapter is not the correct accessory for screen mirroring your Samsung Galaxy S24 Ultra to the Pioneer AVH-1800NEX stereo. This adapter is primarily designed for computers and typically requires driver installation, which Android smartphones like the S24 Ultra do not support. Additionally, it uses a USB-A connection, while your phone uses USB-C. To mirror your phone’s screen via HDMI, you would need a USB-C to HDMI adapter or cable that supports video output through DisplayPort Alt Mode—Samsung’s DeX-compatible adapters or reputable third-party brands like Anker or UGREEN are good options. However, it’s important to note that the Pioneer AVH-1800NEX does not have a native HDMI input. It supports Android Auto via USB and has RCA video input, so to mirror your phone’s screen, you’d likely need both a USB-C to HDMI adapter and an HDMI to RCA converter.

Hello, thank you for your question. The number of Insignia USB to HDMI Adapters that can be used on a single PC depends on your computer's hardware resources, available USB ports, operating system, and graphics capabilities. While some systems can support multiple adapters and displays, the exact maximum number is not specified for this product. We recommend reviewing your computer's specifications to determine how many external displays it can support. Sudeep | Insignia

This adapter supports 4K resolution at 30Hz when using USB 3.0.

This adapter allows you to mirror or extend your screen to a second monitor for better presentations and multitasking.

Yes, the audio signal is sent through the HDMI connection.