File list (Check if you may need any files):
HID_STM32F4
...........\HID
...........\...\main.c
...........\...\main.h
...........\...\MDK-ARM
...........\...\.......\Nu_Link_Driver.ini
...........\...\.......\STM32F4-Discovery_Demo.uvgui.dji
...........\...\.......\STM32F4-Discovery_Demo.uvgui_dji.bak
...........\...\.......\STM32F4-Discovery_Demo.uvopt
...........\...\.......\STM32F4-Discovery_Demo.uvproj
...........\...\.......\STM32F4-Discovery_Demo_Demo.dep
...........\...\Release_Notes.html
...........\...\stm32f4xx_conf.h
...........\...\stm32f4xx_it.c
...........\...\stm32f4xx_it.h
...........\...\system_stm32f4xx.c
...........\...\usbd_conf.h
...........\...\usbd_desc.c
...........\...\usbd_desc.h
...........\...\usbd_usr.c
...........\...\usb_bsp.c
...........\...\usb_conf.h