The College Board does not specifically mention any Civilization in Africa in the Post-Classical period. However, it is crucial to have this background going into the next period (where Africa plays a crucial role). There are some Post Classical things that you do need to know about Africa like the Bantu Migrations, Ibn Battuta, Spread of Islam, etc.
CLIP ONE: BANTU MIGRATIONS
CLIP TWO: GRIOTS
CLIP THREE: MANSA MUSA & ISLAM in AFRICA
CLIP FOUR: TIMBUKTU
CLIP FIVE: GREAT ZIMBABWE
CLIP SIX: WHO BUILT GREAT ZIMBABWE? (from TED TALKS)