Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32F107xx/AFIO/EXTICR2#0x0
External interrupt configuration register 2 (AFIO_EXTICR2)
EXTI4 configuration
EXTI5 configuration
EXTI6 configuration
EXTI7 configuration
https://github.com/cmsis-svd/cmsis-svd-data