HP LaserJet M451dn Colour vs HP LaserJet M451dw Colour

Comparison of M451dn, M451dw

63 specifications	A HP LaserJet M451dn Colour Model M451dn View product	B HP LaserJet M451dw Colour Model M451dw View product
Printingidentical
Colour	Yes	Yes
Print technology	Laser	Laser
Duplex printing	Yes	Yes
Maximum resolution	600 x 600 DPI	600 x 600 DPI
Print speed (black, normal quality, A4/US Letter)	21 ppm	21 ppm
Print speed (colour, normal quality, A4/US Letter)	21 ppm	21 ppm
Time to first page (black, normal)	17 s	17 s
Time to first page (colour, normal)	17 s	17 s
Featuresidentical
Maximum duty cycle	40000 pages per month	40000 pages per month
Recommended duty cycle	2000	2000
Printing colours	Black, Cyan, Magenta, Yellow	Black, Cyan, Magenta, Yellow
Number of print cartridges	4	4
Page description languages	PCL 5c, PCL 6, PostScript 3	PCL 5c, PCL 6, PostScript 3
Input & output capacityidentical
Total number of input trays	2	2
Total input capacity	250 sheets	250 sheets
Total output capacity	150 sheets	150 sheets
Multi-Purpose tray	Yes	Yes
Multi-Purpose tray input capacity	50 sheets	50 sheets
Maximum number of input trays	3	3
Maximum input capacity	550 sheets	550 sheets
Maximum output capacityKnown for one	—Unknown — not stated by the source	150 sheets
Paper handling2 differ
Maximum ISO A-series paper size	A4	A4
Maximum print size	216 x 356 mm	216 x 356 mm
Paper tray media typesDiffers	Bond paper, Card stock, Envelopes, Glossy paper, Labels, Plain paper, Pre-printed, Recycled paper, Transparencies	Bond paper, Card stock, Coated paper, Envelopes, Glossy paper, Labels, Matte paper, Photo paper, Plain paper, Pre-printed, Recycled paper, Transparencies
Multi-purpose tray media typesDiffers	Bond paper, Envelopes, Labels, Letterhead, Plain paper, Recycled paper, Transparencies	Bond paper, Envelopes, Labels, Letterhead, Plain paper, Preprinted forms, Recycled paper, Transparencies
ISO A-series sizes (A0...A9)	A4, A5, A6	A4, A5, A6
Non-ISO print media sizes	Executive, Legal, Letter	Executive, Legal, Letter
Custom media width	76 - 126 mm	76 - 126 mm
Custom media length	216 - 356 mm	216 - 356 mm
Ports & interfaces1 differ
Standard interfacesDiffers	Ethernet, USB 2.0	Ethernet, USB 2.0, Wireless LAN
USB 2.0 ports quantity	1	1
Network1 differ
Wi-FiDiffers	No	Yes
Ethernet LAN	Yes	Yes
Network ready	Yes	Yes
Wi-Fi standardsKnown for one	—Unknown — not stated by the source	802.11b, 802.11g, Wi-Fi 4 (802.11n)
Performanceidentical
Internal memory	128 MB	128 MB
Maximum internal memory	384 MB	384 MB
Processor frequency	600 MHz	600 MHz
Designidentical
Product colour	Black, White	Black, White
Display	LCD	LCD
Poweridentical
Power consumption (printing)	425 W	425 W
Power consumption (PowerSave)	15.2 W	15.2 W
Power consumption (off)	0.5 W	0.5 W
System requirementsidentical
Windows operating systems supported	Yes	Yes
Mac operating systems supported	Yes	Yes
Linux operating systems supported	Yes	Yes
Server operating systems supported	Windows Server 2003, Windows Server 2003 x64, Windows Server 2008	Windows Server 2003, Windows Server 2003 x64, Windows Server 2008
Minimum RAM	1024 MB	1024 MB
Minimum processor	1GHz	1GHz
Minimum storage drive space	400 MB	400 MB
Operational conditionsidentical
Operating temperature (T-T)	59 - 86 °F	59 - 86 °F
Storage temperature (T-T)	-20 - 40 °C	-20 - 40 °C
Operating relative humidity (H-H)	10 - 80%	10 - 80%
Storage relative humidity (H-H)	20 - 70%	20 - 70%
Sustainabilityidentical
Sustainability certificatesKnown for one	—Unknown — not stated by the source	ENERGY STAR
Weight & dimensionsidentical
Weight	23.6 kg	23.6 kg
Dimensions (WxDxH)	405 x 484 x 322 mm	405 x 484 x 322 mm
Packaging contentidentical
Drivers included	Yes	Yes
Other featuresidentical
Mac compatibility	Yes	Yes
Compliance industry standards	IEEE 802.3, IEEE 802.3u	IEEE 802.3, IEEE 802.3u
Networking features	Fast Ethernet	Fast Ethernet
Power LED	Yes	Yes
Stand-by LED	Yes	Yes

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.