HP M451dn LaserJet Pro 400 Color Printer

Detailed Specification:  

Print speed black:
Normal:Up to 21 ppm

Print speed color:
Normal:Up to 21 ppm

First page out (ready)
Black: As fast as 17 sec
Color: As fast as 17 sec

Print quality (best)

Color: Up to 600 x 600 dpi
Black: Up to 600 x 600 dpi

Duty cycle (monthly, letter)
Up to 40,000 pages;

Recommended monthly page volume
750 to 2000

Print technology
Laser 

Processor speed
600 MHz 

Print languages
HP PCL 6, HP PCL 5c, HP postscript level 3 emulation 

Display

• 2-line LCD (text)

Connectivity

HP ePrint capability
Yes 

Mobile printing capability

• HP ePrint, Apple AirPrint™

Wireless capability

• Optional, enabled with purchase of a hardware accessory

Connectivity, standard

• 1 Hi-Speed USB 2.0 port
• 1 Fast Ethernet 10/100Base-TX network port

Network ready
Standard (built-in Fast Ethernet) 

Memory specifications

Memory, standard
128 MB 

Memory, maximum
384 MB 

Hard disk

• None

Paper handling

Paper handling input, standard

• 50-sheet multipurpose tray
• 250-sheet input tray 2

Paper handling output, standard

• 150-sheet output bin

Duplex printing
Automatic (standard) 

Media sizes supported
Tray 1: Letter, legal, executive, 8.5 x 13 in, 3 x 5 in, 4 x 6 in, 5 x 8 in, envelopes (No 10, Monarch); Tray 2, optional Tray 3: Letter, legal, executive, 8.5 x 13 in, 4 x 6 in, 5 x 8 in, envelopes (No 10, Monarch); Automatic duplexer: Letter, legal, executive, 8.5 x 13 in 

Media sizes, custom
Tray 1: 3 x 5 to 8.5 x 14 in; Tray 2, optional Tray 3: 3.94 x 5.83 to 8.5 x 14 in 

Media types
Paper (bond, brochure, colored, glossy, letterhead, photo, plain, preprinted, prepunched, recycled, rough), postcards, transparencies, labels, envelopes 

Media weight, supported
Tray 1: 16 to 47 lb (up to 58 lb with HP Color laser glossy photo papers); Tray 2, optional Tray 3: 16 to 43 lb (up to 47 lb with postcards, up to 58 lb with HP Color laser glossy photo papers); Automatic duplexer: 16 to 43 lb 

Finished output handling

• Sheetfed

Power and operating requirements

Power
Input voltage: 110 to 127 VAC (+/- 10%), 60 Hz (+/- 3 Hz)

Power consumption
425 watts (Active), 15.2 watts (Ready), 4.0 watts (Sleep), 0.5 watts (Off)

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

Energy efficiency

• ENERGY STAR® qualified
• EPEAT® Silver

Operating temperature range
59 to 86ºF 

Operating humidity range

• 20 to 70% RH (non-condensing)

Dimensions and weight 

Minimum dimensions (W x D x H)
15.9 x 19.1 x 12.7 in

Maximum dimensions (W x D x H)
15.9 x 27.1 x 12.7 in 

Weight
52.1 lb 

Package dimensions (W x D x H)
23.42 x 19.48 x 18.18 in 

Package weight
62 lb 

What's included

What's in the box

• Printer
• Four preinstalled introductory HP LaserJet toner cartridges (yield ~1400 pages)
• In-box documentation (Hardware installation guide)
• Software drivers and documentation on CD-ROMs
• Power cord
• Built-in Automatic duplexer for two-sided printing

Cable included
No, please purchase USB cable separately

Warranty
One-year limited warranty, return to HP or authorized service provider