Hi , i have a problem with the trace function in keil he requiers a version off ST-Link /V2 ... and later can you help me !
"my board is STM32F407VG" --> This is a target device and not the board.
Exactly which board are you using ?
Have you followed the user manual as per below link: www.st.com/.../jcr:content/translations/en.DM00026748.pdf