What does a Z-series printer require in order to have HP Professional Pantone emulation?

A.
embedded web server
B.
spectrophotometer on board
C.
HPGL-2 language embedded
D.
PostScript language embedded
Explanation:
http://h10088.www1.hp.com/cda/gap/display/main/index.jsp?zn=gap&cp=20000-20058-20744-20875%5E20704_4041_100__