We have hot pluggable I2C at home. Every HDMI port (and pretty much every DP port with a passive adapter) has I2C on the DDC pins. The port also provides 5V 50m

We have hot pluggable I2C at home. Every HDMI port (and pretty much every DP port with a passive adapter) has I2C on the DDC pins. The port also provides 5V 50mA so your MCU doesn't need external power. Example: https://www.reddit.com/r/raspberry_pi/comments/ws1ale/i2c_on_the_hdmi_port_raspberry_pi_4/ https://www.reddit.com/r/raspberry_pi/comments/ws1ale/i2c_on...