What is true about the HP LaserJet Enterprise M4555 MFP control panel?

A.
It features a USB port on the side for adding third-party solutions.

B.
It is a touchscreen color display.

C.
It features a built-in control-panel diagnostic utility.

D.
It features a text-to-speech accessibility option (English only)

Explanation:

Reference:
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02809988&prodSe
riesId=4072931