Which button should you press to enter the RBSU during POST? seenagape 10 years ago Which button should you press to enter the RBSU during POST? A.F8 B.F9 C.F11 D.F12 Explanation:http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03255924&prodSeriesId=5177953(See Using RBSU) ← Previous question Next question →