HP LaserJet LaserJet Pro MFP M521 - Product specifications

Product dimensions

Product dimensions, with toner cartridge
Product	Height	Depth	Width	Weight
M521dn	508 mm	465 mm	465 mm	22.3 kg
M521dw	508 mm	465 mm	465 mm	22.4 kg

Product dimensions with all doors, trays, and document feeder fully opened
Product	Height	Depth	Width
M521dn	750 mm	900 mm	465 mm
M521dn	750 mm	900 mm	465 mm

Power consumption, electrical specifications, and acoustic emissions

Power consumption

Power consumption (average, in watts)¹^,²^,³
Product Series⁴	Printing	Ready	Sleep	Off
HP LaserJet Pro MFP M521	706 W	18.2 W	4.3 W	0.3 W

¹Values subject to change.

²Power reported is highest value measured for all product models using standard voltages.

³Default time from Ready mode to Sleep = 15 minutes

⁴Speed is 40 ppm A4 size and 42 ppm Letter-size.

Electrical specifications

110-volt input voltage: 100 to 127 VAC (+/- 10%), 50/60 Hz (+/- 2 Hz)

220-volt input voltage: 220 to 240 VAC (+/- 10%), 50/60 Hz (+/- 2 Hz)

caution:
Power requirements are based on the country/region where the product is sold. Do not convert operating voltages. This will damage the product and void the product warranty.

Acoustic emissions

HP LaserJet Pro MFP M521¹
Sound power level Printing (40 ppm) Copying (40 ppm) Ready	Declared per ISO 9296 L_WAd = 6.7 Bels (A) [67 dB(A)] L_WAd = 6.8 Bels (A) [68 dB(A)] Inaudible
Sound pressure level - Bystander position Printing/Copying (40 ppm) Ready	Declared per ISO 9296 L_pAm = 54 dB(A) Inaudible

¹Acoustic values are subject to change. Configuration tested: HP LaserJet Pro M521dw, printing on A4-size paper at 40 ppm in simplex mode.

Operating-environment specifications

Operating-environment specifications
Environment	Recommended	Allowed
Temperature	15° to 32.5°C	15° to 32.5°C
Relative humidity	30% to 70% relative humidity (RH)	10% to 90% RH
Altitude	Not applicable	0 to 3048 m