These printers use the Q7553X cartridge:

HP LaserJet M-2727 NF MFP

HP LaserJet M-2727 MFP

HP LaserJet M-2727 NF

HP LaserJet M-2727 NFS

HP LaserJet P-2010

HP LaserJet P-2010 Series

HP LaserJet P-2014

HP LaserJet P-2015

HP LaserJet P-2015 D

HP LaserJet P-2015 DN

HP LaserJet P-2015 N

HP LaserJet P-2015 X

TROY-Systems 2015

TROY-Systems Troy 2015