The I²C bus on pins 12 and 15 is definitely a serial interface, and arguably each color is serial, even if they’re not… the traditional sort.
It is quite amusing how many less ambiguous serial connectors they could have trivially chosen. PCI-E, ethernet (8P8C), SATA, SAS, HDMI, FireWire… the options are numerous.
The I²C bus on pins 12 and 15 is definitely a serial interface, and arguably each color is serial, even if they’re not… the traditional sort.
It is quite amusing how many less ambiguous serial connectors they could have trivially chosen. PCI-E, ethernet (8P8C), SATA, SAS, HDMI, FireWire… the options are numerous.