This easy-to-install internal fax card increases the functionality of your device and improves productivity. Enhance the value of your HP Color LaserJet CM3530 MFP with analog fax capability.- Get industry-renowned HP LaserJet reliability you expect. This affordable and reliable analog fax accessory efficiently processes jobs with V.34 (up to 33.6 kbps) while providing standard JBIG compression to save time and money by shortening calls.- Enjoy secure faxing on your device with manual and scheduled memory lock. This convenient feature keeps sensitive information confidential by ensuring that faxed documents are only printed for authorised personnel.1 Standard on the HP Color LaserJet CM3530fs (CC520A) optional on the HP LaserJet CM3530 (CC519A)