HP Color LaserJet Enterprise CM4540 MFP series - Manual (Page 356)

Customer support
Get telephone support for your country/region
Have the product name, serial number, date of purchase, and
problem description ready.
Country/region phone numbers are on the flyer that was in
the box with your product or at
www.hp.com/support/ .
Get 24-hour Internet support www.hp.com/support/cljcm4540mfp
Get support for products used with a Macintosh computer www.hp.com/go/macosx
Download software utilities, drivers, and electronic
information www.hp.com/go/cljcm4540mfp_software
Order additional HP service or maintenance agreements www.hp.com/go/carepack
Register your product www.register.hp.com
336 Appendix B Service and support ENWW