HP Officejet Pro L7480 All-in-One Printer - Manual (Page 106)

Electrical specifications
Power supply
Universal power adapter (external)
Power requirements
Input voltage: 100 to 240 VAC (± 10%), 50/60 Hz (± 3Hz)
Output voltage: 32 Vdc, 2500 mA
Power consumption
32 watts printing; 35 watts copying
Acoustic emission specifications (print in Draft mode, noise levels
per ISO 7779)
Sound pressure (bystander position)
LpAd 55 (dBA)
Sound power
LwAd 6.9 (BA)
Appendix C
102 Device specifications