Rtl9210b Datasheet 2021 !!top!! -

The chip supports programmable LED output (Pin 35 in many configurations).

Backward compatible with USB 3.2 Gen 1, USB 2.0, and USB 1.1. rtl9210b datasheet 2021

Realtek also provided a (RTL9210B-CG EVB) which included a USB-C receptacle, NVMe M.2 M-key slot, SPI flash socket, and two LEDs. The chip supports programmable LED output (Pin 35