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HP LaserJet Pro 300/400 Color M351/M451 - Product specifications

Product dimensions

Product dimensions, with toner cartridge
Product
Height
Depth
Width
Weight
M351a
322 mm
454 mm
405 mm
22.7 kg
M451nw
322 mm
454 mm
405 mm
22.7 kg
M451dn
322 mm
484 mm
405 mm
23.9 kg
M451dw
322 mm
484 mm
484 mm
23.9 kg
Product dimensions with all doors, trays, and document feeder fully opened
Product
Height
Depth
Width
M351a
322 mm
659 mm
405 mm
M451nw
322 mm
659 mm
405 mm
M451dn
322 mm
689 mm
405 mm
M451dw
322 mm
689 mm
405 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 300 Color M351
410 W
15.7 W
3.0 W
0.5 W
HP LaserJet Pro 400 Color M451
425 W
15.2 W
4.0 W
0.5 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
4M351: Speed is 18 ppm A4 size and 19 ppm Letter-size. M451: Speed is 20 ppm A4 size and 21 ppm Letter-size.

Electrical specifications

110-volt input voltage: 100 to 127 VAC (+/- 10%), 50/60 Hz (+/- 3 Hz)
220-volt input voltage: 220 to 240 VAC (+/- 10%), 50/60 Hz (+/- 3 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 300 Color M3511
Sound power level
Printing
Ready
Declared per ISO 9296
LWAd = 6.4 Bels (A) [64 dB(A)]
LWAd = 4.0 Bels (A) [40 dB(A)]
Sound pressure level - Bystander position
Printing
Ready
Declared per ISO 9296
LpAm = 51 dB(A)
LpAm = 26 dB(A)
1Acoustic values are subject to change.
HP LaserJet Pro 400 Color M4511
Sound power level
Printing
Ready
Declared per ISO 9296
LWAd = 6.5 Bels (A) [65 dB(A)]
LWAd = 4.1 Bels (A) [41 dB(A)]
Sound pressure level - Bystander position
Printing
Ready
Declared per ISO 9296
LpAm = 51 dB(A)
LpAm = 27 dB(A)
1Acoustic values are subject to change.

Operating-environment specifications

Operating-environment specifications
Environment
Recommended
Allowed
Temperature
17° to 25°C
15° to 30°C
Relative humidity
30% to 70% relative humidity (RH)
10% to 80% RH
Altitude
Not applicable
0 to 3048 m

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