CC519-67903HP Color LaserJet CM3530 series Formatter (main logic) board.
CC519-67907Fax cable - Cable that connects the fax card to the formatter board
CC519-67921HP Color LaserJet CM3530 series Formatter (main logic) board assembly.
Q3701-60004Fax printed circuit assembly (PCA) - Accessed from the rear of the unit - Located on the formatter boardHP LaserJet analog fax accessory 300