HDMI ARC (Audio Return Channel, HDMI 1.4) and eARC (Enhanced ARC, HDMI 2.1) allow audio to flow back from TV to soundbar

Micro HDMI is the smallest HDMI connector, found on Raspberry Pi 4, smartphones, action cameras like GoPro HERO3+, and u

Mini HDMI connector used on cameras, camcorders, tablets, and compact devices. Electrically identical to Type A with the

Rare 29-pin dual-link HDMI connector providing double the bandwidth of Type A. Never widely adopted; intended for extrem

Standard full-size HDMI connector found on TVs, monitors, laptops, and consumer AV equipment. Carries uncompressed digit

16-bit I2C I/O expander. 8 devices per bus, interrupt support, configurable pull-ups.

I2C 8-bit I/O expander. Adds 8 GPIO pins over I2C, used in LCD I2C backpacks.

Low-cost USB to UART bridge. Found on Arduino clone boards, needs CH340 driver.

USB to UART bridge IC. Creates virtual COM port, no external components needed.

RS-232 to TTL level converter. Interfaces microcontrollers with serial COM ports.