https://www.st.com/en/evaluation-tools/x-nucleo-plm01a1.html
X-NUCLEO-PLM01A1 | Product - STMicroelectronics
The X-NUCLEO-PLM01A1 expansion board for STM32 Nucleo is based on the ST7580 FSK, PSK multi-mode power line networking system-on-chip.
xnucleoproductstmicroelectronics