APPENDIX A—TECHNICAL SPECIFICATIONS 13
A—TECHNICAL SPECIFICATIONS
Color and black-only: up to 32 ppm A4 (up to 33 ppm letter)
As fast as 11 seconds from Ready (A4/letter)
HP ImageREt 3600 technology; up to 1200 x 1200 dpi
4-line graphical color display, 3 lights (Attention, Data, Ready), 7 buttons (Help, Menu, OK, Stop, Back, Down,
Up)
HP ePrint; HP FutureSmart firmware; Auto-On/Auto-Off
M551dn also includes: Walk-up USB; Hardware Integration Pocket; two-sided printing
M551xh also includes: Walk-up USB; Hardware Integration Pocket; two-sided printing; HP High Performance
Secure Hard Disk (AES 128 encryption); 500-sheet input tray 3
1024 MB RAM (not upgradable)
Recommended monthly volume: 1,500 to 5,000 pages
21
Duty cycle: up to 75,000 pages (A4/letter)
22
M551n, M551dn: 100-sheet multipurpose tray 1, 500-sheet tray 2
M551xh: 100-sheet multipurpose tray 1, 500-sheet tray 2, 500-sheet input tray 3
M551n: Manual
M551dn, M551xh: Automatic
Multipurpose tray 1: 76 x 127 mm (3.0 x 5.0 in) to 216 x 356 mm (8.5 x 14 in); A4, RA4, A5, B5 (JIS),
B6 (JIS), 10 x 15 cm, A6, 16K; letter, legal, executive, statement, 4 x 6, 3 x 5, 5 x 7, 5 x 8, postcard (JIS),
double postcard (JIS), 8.5 x 13; envelopes (B5, C5 ISO, C6, DL ISO, No. 10, No. 9, Monarch)
Tray 2: 102 x 148.5 mm (4.0 x 5.85 in) to 216 x 297 mm (8.5 x 11.69 in); A4, A5, B5 (JIS), B6 (JIS),
10 x 15 cm, A6, 16K; letter, executive, statement, 4 x 6, 5 x 7, 5 x 8, double postcard (JIS)
Tray 3: 148.5 x 216 mm (5.85 x 8.5 in) to 210 x 356 mm (8.27 x 14 in); A4, RA4, A5, B5 (JIS), 16K; letter,
legal, executive, 8.5 x 13
Automatic two-sided printing unit: A4, A5, B5 (JIS); letter, legal, executive
Multipurpose tray 1: 60 to 216 g/m
2
(16 to 57 lb) plain paper, 105 to 220 g/m
2
(28 to 58 lb) glossy paper
Tray 2: 60 to 163 g/m
2
(16 to 43 lb) plain paper, 105 to 220 g/m
2
(28 to 58 lb) glossy paper
Tray 3: 60 to 176 g/m
2
(16 to 47 lb) plain paper, 105 to 220 g/m
2
(28 to 58 lb) glossy paper
Two-sided printing: 60 to 163 g/m
2
(16 to 43 lb) automatic duplex, 60 to 220 g/m
2
(16 to 58 lb) manual
duplex
Paper (plain, light, bond, recycled, mid-weight, heavy, mid-weight glossy, heavy glossy, extra heavy, extra
heavy glossy, cardstock, card glossy), color transparency, labels, letterhead, envelope, preprinted, prepunched,
colored, rough, opaque film, user-defined
M551n: 1 Hi-Speed USB 2.0 host port; 1 Hi-Speed USB 2.0 device port; 1 Gigabit Ethernet 10/100/1000
Base-TX network port; 2 internal USB host ports
M551dn and M551xh: 2 Hi-Speed USB 2.0 host ports; 1 Hi-Speed USB 2.0 device port; 1 Gigabit Ethernet
10/100/1000 Base-TX network port; 1 Hardware Integration Pocket; 2 internal USB host ports
Via HP Jetdirect 10/100/1000 Base-TX Ethernet embedded print server; 802.3az (EEE); IPsec
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)
105 internal TrueType fonts scalable in HP PCL, 92 internal scalable fonts in HP postscript Level 3 emulation
(Euro symbol built-in); 1 internal Unicode fonts (Andale Mono WorldType); 2 Internal Windows Vista® 8 fonts
(Calibri, Cambria); additional font solutions available via third-party flash memory cards; HP LaserJet Fonts and
IPDS Emulation available at www.hp.com/go/laserjetfonts