Geekworm Micro HDMI to Standard HDMI Adapter for Raspberry Pi 5/4B-Dual 4K Output & Dual Power Modes

Note: Not include Raspberry Pi 5 or Raspberry Pi 4 board.

Overview:

Introducing our Micro HDMI to HDMI Multifunctional Adapter, designed specifically for Raspberry Pi 5 and 4B users. This adapter supports dual 4K outputs and offers two flexible power supply options: Type-C power and wiring terminal power. It even includes a PH2.0 3 Pin power output for added convenience. Upgrade your Pi experience today!

Features

• Compatible with Raspberry Pi 5 and Raspberry Pi 4 Model B
  
• Dual power input options: USB Type-C or screw terminal
  
• Supports dual 4K display output

Packing List:

• 1 x Adapter Board

Q: What do the two UART connectors do on that board? It came with two 100mm 3x wire cables but cannot see how to use the tx rcv or any reference to its use?
Answer:
One cable is used to connect the serial debug port of the Pi 5 board and the expanding board. Another cable is used to connect the UART interface of the expanding board.
They are used to expand the serial debug port from the Raspberry Pi board and easily to use while adding a case.