KK254 Molex headerAudio Jack, 2 Poles (Mono / TS), Switched T Pole (Normalling Audio Jack, 2 Poles (Mono / TS), Switched T Pole (Normalling) | | | | R3, R21 | 2 pin Molex header 2.54 mm spacing 3 pin Molex header 2.54 mm spacing Pin header 2.54 mm spacing D 3 pin Molex header 2.54 mm spacing"/>
Https://www.st.com/resource/en/datasheet/stm32l496wg.pdf ST WLCSP-132, ST.