Printing
Print speed (colour, normal quality, A4/US Letter)	28, 27
Print speed (black, draft quality, A4/US Letter)	28, 27
Colour
Print technology	Laser
Duplex printing
Maximum resolution	600 x 600 DPI
Print speed (black, normal quality, A4/US Letter)	27 ppm
Print speed (colour, draft quality, A4/US Letter)	28 ppm
Print speed (black, normal quality, A3)	14 ppm
Print speed (colour, normal quality, A3)	14 ppm
Warm-up time	120 s
Time to first page (black, normal)	16 s
Time to first page (colour, normal)	16 s

Features
Maximum duty cycle	120000 pages per month
Number of print cartridges	4
Page description languages	PDF 1.3

Input & output capacity
Total input capacity	2100 sheets
Total output capacity	250 sheets
Maximum input capacity	2100 sheets
Maximum output capacity	250 sheets

Paper handling
Maximum ISO A-series paper size	A3
Paper tray media types	Envelopes, Glossy paper, Labels, Plain paper, Transparencies
ISO A-series sizes (A0...A9)	A3, A4, A5
JIS B-series sizes (B0...B9)	B4, B5
Duplex media weight	60 - 120 g/m²
Media types supported	Paper (extra heavy, glossy, heavy, heavy glossy, high gloss images, intermediate, light, plain, recycle, tough), envelopes, labels, cardstock, transparencies
Media size (tray 1)	Letter, letter-R, legal, executive, tabloid (11 x 17 in), ledger, 16K, 8K, A3, A4, A4-R, A5, envelope (No. 10, DL, C5, B5, Monarch), B4-JIS, B5-JIS, executive-JIS, double postcard-JIS, 12 x 18 in, 8.5 x 13 in, A6, B6, RA3, statement, 76.2 x 98 to 306 x 470 mm
Media weight (tray 1)	200 g/m²

Network
Network ready
Supported network protocols (IPv4)	TCP/IP, IPX/SPX, AppleTalk, Apple Rendezvous, DLC/LLC, Auto-IP, IP Direct Mode, NDS, Bindery, NCP, NDPS, iPrint, Telnet, SLP, IGMP, BOOTP/DHCP, WINS, SNMP v1 & v2c, HTTP; LPD, FTP Printing, IPP

Performance
Internal memory	288 MB
Maximum internal memory	544 MB
Internal storage capacity	20 GB
Storage media	HDD
Built-in processor
Processor model	MIPS RISC
Processor frequency	533 MHz

Power
Power consumption (printing)	632 W
Power consumption (PowerSave)	28 W
Power consumption (off)	0.3 W

System requirements
Minimum system requirements for Macintosh	Mac OS 9.0, 9.04, 9.1, 9.2, 10.1: 4 MB RAM & 160 MB HD

Operational conditions
Operating temperature (T-T)	15 - 27 °C
Storage temperature (T-T)	0 - 35 °C
Operating relative humidity (H-H)	10 - 70%
Storage relative humidity (H-H)	10 - 90%
Operating temperature (T-T)	63 - 77 °F

Weight & dimensions
Maximum dimensions (W x D x H)	630 x 1550 x 1097 mm
Pallet dimensions (W x D x H)	1010 x 780 x 1359 mm
Weight	136 kg
Dimensions (WxDxH)	630 x 718 x 1097 mm

Packaging data
Package weight	168 kg

Packaging content
Bundled software	HP PCL 5c, HP PCL 6, HP Postscript Lvl 3

Logistics data
Pallet gross weight	168 kg
Layers per pallet	5 pc(s)
Products per pallet	1 pc(s)

Other features
Additional paper trays	500-sheet input tray 4 and feeder
Print quality (black, draft quality)	600 DPI
Print quality (black, normal quality)	600 DPI
Recommended humidity operating range	30 - 70%
Power supply type	110~220V
Recommended operating temperature range (T-T)	15 - 25 °C
Mac compatibility
I/O ports	1 x IEEE 1284-C, 1 x USB, 1 x 10/100Base- TX, 1 x EIO
Input capacity for envelopes (primary tray)	20 sheets
Custom media sizes	Tray 1: 76 x 127 to 306 x 470 mm; automatic two-sided printing, Tray 2, 3, 4, 5: 148 x 210 to 297 x 431.8 mm Tray 1: 3 x 5 to 12.05 x 18.5 in; automatic two-sided printing, Trays 2, 3, 4, 5: 5.8 x 8.3 to 11.7 x 17 in
Memory upgrade	0.544 GB
Print margin bottom (A4)	5 mm
Print margin left (A4)	5 mm
Print margin right (A4)	5 mm
Print margin top (A4)	5 mm

Other features
Typefaces	80 internal TrueType fonts scalable in HP PCL, 92 internal scalable fonts in HP Postscript Level 3 emulation (Euro symbol built-in); additional font solutions available via third-party flash memory cards
Recommended media weight	Tray 1: 60 - 200; Tray 2, 3, 4, 5: 60 - 120
Standard output capacity for envelopes	40 sheets
Minimum system requirements	Microsoft Windows 7 ready. For more information go to http:///go/windows7. Some features may not be available. Windows Vista: 1 GHz processor, 512 MB RAM (check User’s Guide for minimum hard disk space); Windows 2000: 300 MHz processor, 64 MB RAM; Windows XP: 233 MHz processor, 64 MB RAM; for all systems: 180 MB availale hard disk space, CD-ROM drive or Internet connection, IEEE-1284 parallel port
Envelope feeder
Printer management	HP Web Jetadmin, HP Embedded Web Server, HP eToolbox
Acoustic power emissions	LwAd: 6.6 B(A)
Acoustic pressure emissions	49 dB
Power requirements	100 - 240 VAC (- 10/+ 6%), 50/60 Hz (+/-2 Hz)
Print quality (colour, best quality)	600 DPI
Duplex print options	Automatic (standard)
Duty cycle letter size (maximum)	120000 pages per month
Print speed (colour, best quality, A4)	28 ppm
Print speed (black, best quality, A4)	28 ppm
Colour printing technology	HP ImageREt 3600
Paper handling	100
Electromagnetic compatibility	CISPR 22: 1997/EN 55022: 1998 Class B, EN 61000-3-2:2000, EN 61000-3-3: 1995, EN 55024: 1998, FCC Title 47 CFR, Part 15 Class B/ICES-003, Issue 4/GB9254-1998, GB17625.1-2003, EMC Directive 89/336/EEC and the Low Voltage Directive 73/23/EEC, and carries the CE-Marking accordingly
Standard input trays	5
Networking features	Fast Ethernet
Safety	Argentina (TUV S Mark-Rs.92/98/Ds.1009/98), Australia (AS/NZ 3260), Canada (cUL-CAN/CSA C22.2 No.60950-00), China (GB4943), Czech Republic (CSN-IEC 60950-IEC 60825-1), Estonia (EEI-EN60950-IEC 60825-1), EU (CE Mark-Low Voltage Directive 73/23/EEC), Germany (TUV- EN60950-IEC 60825-1), Hungary (MEEI- IEC 60950-IEC 60825-1), Japan Radio Law, Lithuania (LS- IEC 60950-IEC 60825-1), Mexico (NOM NYCE-NOM 019 SCFI), Poland (B Mark- IEC 60950-IEC60825-1), (Russia (GOST- R50377), Slovakia (IEC 60950-IEC60825-1), Slovenia (SQI- IEC 60950-EN60825-1), South Africa (IEC 60950-IEC60825-1), USA (UL-UL 60950, FDA-21 CFR Chapter 1 Subchapter J for lasers); Class 1 Laser/LED Product
Downloadable software	Microsoft Windows 2000, XP (32-bit and 64-bit drivers), Server 2003 (32-bit and 64-bit drivers); Apple Macintosh OS 9 and later, Mac OS X v.10.1 and later
Compatible operating systems	Windows Vista; UNIX, Linux, Novell NetWare 5.1 +, OS/2 Microsoft Windows 2000, XP Home, XP Professional, Windows Vista Ready, Windows Server 2003 (32/64 bit); Mac OS 9 +
Product dimensions when open (LxWxD)	63 cm (24.8")
Print quality (black, best quality)	600 x 600 DPI
Wireless option type	Optional, enabled with purchase of a hardware accessory
Standard output capacity for transparencies	250 sheets
Driver updates	OS/2, UNIX, Linux; basic printing support for DOS; current drivers and software are available from the Internet at /support/clj5550
Duplex supported media size	A3, A4, A5, B4-JIS, B5-JIS
Media handling	Sheetfed
Memory technology	Memory Enhancement technology (MEt)
Control panel	LCD
Maximum paper trays	5
Media size (tray 2)	A4, A3, A5, B4-JIS, B5-JIS
Media type and capacity (tray 2)	500
Media weight (tray 2)	120 g/m²
Media weight (tray 3)	120 g/m²
Paper handling optional/input	Tray 3: 500-sheet paper tray; Tray 4,5: 2 x 500-sheet paper trays; printer stand
Paper handling standard/input	100
Paper handling standard/output	250
Security management description	Management security: SNMP v 3, SSL/TLS (HTTPS), 802.1x authentication; wireless network security: WPA (Wi-Fi Protected Access), WEP encryption (40/64- and 128-bit), 802.1x authentication (EAP-PEAP, LEAP, EAP-TTLS, EAP-TLS, EAP-MD5) with RADIUS servers
Upgrade type	Color tables, formatter firmware, software drivers
Service & support	1 year on-site warranty. Optional HP Care Pack services available.
Technical features	Empower your business with wide-format colour laser printing. Proven performer with up to 28 ppm, 16 second first page out from "Ready" and up to 288 MB RAM. Simplify printer management with HP Embedded Web Server and HP Web Jetadmin. Demand versatility with expanded media support for a range of options. Printer design and HP Smart printing technology* make supplies management easy. High-capacity HP supplies and duty cycle up to 120,000 pages per month keep intervention rates low. HP Smart printing technology* for precise colour calibration and consistency. Create accurate, consistent colour, precise drawings and great images every time.
Package dimensions (W x D x H)	977.9 x 797.6 x 1358.9 mm (38.5 x 31.4 x 53.5")
Pallet dimensions (W x D x H) (imperial)	1010.9 x 779.8 x 1358.9 mm (39.8 x 30.7 x 53.5")
Pallet weight (imperial)	167.6 kg (369.6 lbs)
Weight (imperial)	141.5 kg (312 lbs)
Acoustic pressure emissions bystander (active, print, copy or scan)	49 dB(A)
Duplex binding
First page out (black&white, A4, ready)	16 s
First page out (black&white, letter, ready)	16 s
First page out (black&white, letter, sleep)	41 s
Media sizes supported (imperial)	Letter, legal, statement, executive, 11 x 17 in, ledger, envelopes (No. 10, Monarch)
Operating altitude (imperial)	10000 ft
Package weight (imperial)	167.6 kg (369.6 lbs)
Print speed (black, best quality, letter)	27 ppm
Size (imperial)	63 cm (24.8")
Print speed (colour, best quality, letter)	27 ppm
Print speed (colour, draft quality, letter)	27 ppm
Recommended media weight (duplex, imperial)	16 - 32 lb
UNSPSC-code	43212105
Package dimensions (WxDxH)	979 x 797 x 1359 mm