Detailed Specification:   

Print speed black:
Normal:Up to 32 ppm 

Print speed color:
Normal:Up to 32 ppm

First page out (ready)
Black: As fast as 11 sec
Color: As fast as 11 sec 

Print quality black (best)

• Up to 1200 x 1200 dpi

Print quality color (best)

• Up to 1200 x 1200 dpi

Duty cycle (monthly, A4)
Up to 75000 pages

Recommended monthly page volume
1500 to 5000 

Recommended monthly page volume note
HP recommends that the number of printed pages per month be within the stated range for optimum device performance, based on factors including supplies replacement intervals and device life over an extended warranty period. 

Print technology

• Laser

Processor speed
800 MHz 

Print languages
HP PCL 6, HP PCL 5c (HP PCL 5c driver available from the Web only), HP Postscript Level 3 emulation, native PDF printing (v 1.4) 

Display

• 4-line LCD (colour graphics)

Connectivity

HP ePrint capability
Yes 

Mobile printing capability

• HP ePrint

Wireless capability

• Optional, enabled with purchase of a hardware accessory

Connectivity, standard

• 1 Hi-Speed USB 2.0 Host port
• 1 Hi-Speed USB 2.0 Device port
• 1 Gigabit Ethernet 10/100/1000T network port
• 2 internal USB Host ports

Connectivity, optional

• HP Jetdirect ew2500 Wireless Print Server J8021A, HP Jetdirect 2700w USB Wireless Print Server J8026A (available in early 2012)

Network ready
Standard (built-in Gigabit Ethernet) 

Memory specifications

Memory, standard
1 GB (1024 MB) 

Memory, maximum
1 GB (1024 MB) 

Hard disk

• None

Paper handling

Paper handling input, standard
100-sheet multipurpose tray, 500-sheet input tray 2 

Paper handling input, optional
500-sheet heavy media input tray 3 

Paper handling output, standard
250-sheet output bin 

Duplex printing
Manual (driver support provided) 

Media sizes supported
Tray 1: A4, RA4, A5, B5 (JIS), B6 (JIS), 10 x 15 cm, A6, envelopes (B5, C5 ISO, C6, DL ISO); Tray 2: A4, A5, B5 (JIS), B6 (JIS), 10 x 15 cm, A6; Optional Tray 3: A4, A5, B5 (JIS) 

Media types
Paper (plain, light, bond, recycled, mid-weight, heavy, mid-weight glossy, heavy glossy, extra heavy, extra heavy glossy, cardstock, card glossy) colour transparency, labels, letterhead, envelope, preprinted, prepunched, coloured, rough, opaque film, user-defined 

Supported media weight
Tray 1: 60 to 216 g/m² (plain paper), 105 to 220 g/m² (glossy paper); Tray 2: 60 to 163 g/m² (plain paper), 105 to 220 g/m² (glossy paper); Optional Tray 3: 60 to 176 g/m² (plain paper), 105 to 220 g/m² (glossy paper) 

Power and operating requirements

Power
Input voltage: 220 to 240 VAC (+/- 10%), 50 Hz (+/- 2 Hz), 6 A 

Power consumption
605 watts (printing), 51 watts (standby), 6.9 watts (sleep), 1 watt (auto-off), 0.3 watts (manual-off); Typical Electricity Consumption (TEC): 4.053 kWh/Week 

Operating temperature range
10 to 30ºC 

Operating humidity range

• 20 to 60% RH

Dimensions and weight

Minimum dimensions (W x D x H)
514 x 491 x 385 mm 

Maximum dimensions (W x D x H)
824 x 740 x 385 mm 

Weight
34 kg 

Package dimensions (W x D x H)
600 x 500 x 725 mm 

Package weight
37.7 kg 

What's included

What's in the box

• HP LaserJet Enterprise 500 color M551n printer
• four preinstalled HP LaserJet toner cartridges (yield ~5,500 pages black and ~6,000 pages colour)
• toner collection unit
• in-box documentation (Getting Started Guide)
• software drivers and documentation on CD-ROM
• power cable
• HP Jetdirect Gigabit Ethernet embedded print server
• 100-sheet multipurpose tray 1
• 500-sheet input tray 2

Cable included
No, please purchase USB cable separately 

Warranty
One-year, next-day, on-site limited warranty. Warranty and support options vary by product, country and local legal requirements.