On which component is the HP Color LaserJet Enterprise CM4540 MFP firmware stored?

A.
DC controller

B.
inter-connect board

C.
hard drive

D.
control panel

Explanation:

Reference:
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&objectID=c01
923575&jumpid=reg_R1002_USEN