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Product Number
HP Officejet Pro K550 color printer C8157A
HP Officejet Pro K550dtn color printer C8158A
HP Officejet Pro K550dtwn color printer C8159A
Paper handling
Automatic two-sided printing accessory C8255A
350-sheet input tray C8256A
HP print supplies
15
HP 88 Black Ink Cartridge, 20.5 ml C9385A
HP 88 Cyan Ink Cartridge, 9 ml C9386A
HP 88 Magenta Ink Cartridge, 9 ml C9387A
HP 88 Yellow Ink Cartridge, 9 ml C9388A
HP 88L Black Ink Cartridge, 58.9 ml C9396A
HP 88L Cyan Ink Cartridge, 17.1 ml C9391A
HP 88L Magenta Ink Cartridge, 17.1 ml C9392A
HP 88L Yellow Ink Cartridge, 17.1 ml C9393A
HP 88 Black and Yellow Printhead C9381A
HP 88 Magenta and Cyan Printhead C9382A
Cables
USB cable (a-b) 2 meter C6518A
Connectivity
HP Jetdirect en3700 Fast Ethernet external print server
(USB 2.0, 10/100Base-TX)
J7942A
HP Jetdirect ew2400 802.11b/g wireless and Fast Ethernet
external print server (USB 2.0)
J7951A
HP Jetdirect 175x Fast Ethernet external print server
(USB 1.1)
J6035D
Supported paper
North America: www.hp.com/go/everydaypapers
USA: 1-800-477-5010
HP Officejet Pro K550 series color printer
Technical specifications HP Officejet Pro K550 color printer (C8157A) HP Officejet Pro K550dtn color printer (C8158A) HP Officejet Pro K550dtwn color printer (C8159A)
Print speed (letter)
11
Black Up to 37 ppm Draft; 16 ppm Normal; 12 ppm Laser Quality Speed
12
; 5 ppm Best
Color Up to 33 ppm Draft; 16 ppm Normal; 10 ppm Laser Quality Speed
12
; 5 ppm Best
Resolution
Up to 4800 by 1200-optimized dpi color when printing on HP Premium Photo Papers from a computer, 1200 by 1200 dpi input
Processor
300 MHz
Memory
32 MB RAM
Duty cycle
Up to 7,500 pages per month
Media
Input 250-sheet tray 250-sheet tray, 350-sheet tray
Duplex printing Optional automatic two-sided printing accessory Automatic two-sided printing accessory
Output 150 sheets
Custom sizes 3 by 5 in (76 by 127 mm) to 8.5 by 14 in (216 by 356 mm)
Standard sizes Letter, legal, statement, executive, No. 10 envelopes, Monarch envelopes
Weights 250-sheet tray: plain media: 16 to 28 lb (60 to 105 g/m
2
), special media: 16 to 110 lb (60 to 200 g/m
2
), card media: up to 110 lb index (200 g/m
2
)
350-sheet tray: plain media: 16 to 28 lb (60 to 105 g/m
2
)
Types Paper (plain, inkjet, photo), envelopes, brochure paper, transparencies, labels, cards (index, greeting)
Connectivity
Interfaces Hi-Speed USB 2.0 port Hi-Speed USB 2.0 port, built-in wired Ethernet networking Hi-Speed USB 2.0 port, Full-Speed USB host connector
(for Windows® Connect Now configuration), built-in
wired Ethernet networking, built-in wireless 802.11b/g
networking with SecureEasySetup™
Printer language HP PCL 3 GUI
Operating systems Windows® 98, Windows Me, Windows 2000, Windows XP 64-bit (Professional and Home Editions), and Windows Server 2003; Mac OS X (10.2, 10.3, 10.4): Linux®; Windows
2000, 2003 Server Terminal Services with Citrix MetaFrame 1.8; Windows 2000 Server Terminal Services with Citrix V1.8, XP, Windows 2000 Server Terminal Services
Minimum system
requirements
Windows 98: 90 MHz Pentium®, 16 MB RAM, 50 MB hard disk space; Windows ME: 150 MHz Pentium, 32 MB RAM, 50 MB hard disk space, Windows 2000, XP: 300 MHz
Pentium, 64 MB RAM, 110 MB hard disk space, Windows 2003 Server: 550 MHz Pentium, 128 MB RAM, 110 MB hard disk space; monitor (640 by 480 resolution, 256 colors)
Mac OS X (10.2, 10.3 10.4), 333 MHz (iMac), 350 MHz (Power Mac); 128 MB RAM; 100 MB available disk space; monitor (640 by 480, 256-color display); CD-ROM drive
Dimensions (w by d by h)
19.5 by 15.9 by 8.4 in (496 by 403.2 by 212.5 mm) 19.5 by 19.8 by 11.9 in (496 by 503.9 by 301.2 mm)
Weight
21.4 lb (9.7 kg) 28.5 lb (12.9 kg)
What’s in the box
Printer; power cord; USB cable (Asia Pacific only); HP 88 Black Ink Cartridge, 20.5 ml; HP 88 Cyan, Magenta, and Yellow Ink Cartridges, 9 ml; 2 printheads;
Getting Started Guide; Setup Poster; driver CD (includes User’s Guide)
Also includes 350-sheet tray, automatic two-sided printing accessory,
built-in wired Ethernet networking
350-sheet tray, automatic two-sided printing accessory,
cross cable, built-in wired Ethernet networking, built-in
wireless 802.11b/g networking with SecureEasySetup™
Environmental ranges
Operating temperature 41 to 95° F (5 to 35° C); Recommended: 59 to 95° F (15 to 35° C)
Storage temperature -40 to 158° F (-40 to 70° C)
Operating humidity 15 to 80% RH
Non-operating humidity 15 to 90% RH
Operating altitude 3048 m
Acoustics
Sound power 6.5 B(A) (printing at 16 ppm) Normal mode
6.9 B(A) (printing at 37 ppm) Draft mode
Sound pressure
(user standing)
51 dB(A) (printing at 16 ppm) Normal mode
55 dB(A) (printing at 37 ppm) Draft mode
14 dB(A) Powersave mode
15 dB(A) Standby mode
Power specifications
13
Input requirements: 100 to 240 VAC, 50/60 Hz
Power consumption K550 K550dtn K550dtwn
Maximum
14
180 watts 180 watts 180 watts
Active 52.17 watts 53.97 watts 58.70 watts
Standby 8.47 watts 8.83 watts 11.36 watts
Powersave 7.20 watts 8.83 watts 11.36 watts
Off 0.78 watts (240 V)
0.15 watts (110 V)
0.78 watts (240 V)
0.15 watts (110 V)
0.78 watts (240 V)
0.15 watts (110 V)
Power certifications
Energy Star® compliant
EMC US (FCC Rules), Canada (DoC)
Safety IEC 950-compliant, safety UL listed, EU LVD, EN 60950 compliant, NEMKO-GS ap-
proved, certified by Canada CSA, Mexico NOM-NYCE
Warranty
One-year limited hardware warranty; standard exchange, 24-hour, 7 days a week Web
support, business hour phone support
11
Approximate figures—exact speed will vary depending on the print settings, system configuration, software program, and document
complexity.
12
Compared to color laser printers under $500. Laser Quality Speed is an HP measurement method representing the print speed of typical
office documents in default mode; compared to published speeds by laser manufacturers as of May, 2005.
13
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.
14
Maximum power does not occur at a sustained duration, it is a transitional peak power over a short period during operation. The power
actually consumed is much lower and better represented by the active, standby and power save mode figures.
15
For estimated yields, refer to www.hp.com/go/pageyield
Energy Star and the Energy Star logo are U.S. registered marks of the United States Environmental Protection Agency. HP and
the invent signature are trademarks of the Hewlett-Packard Company. Linux is a U.S. registered trademark of Linus Torvalds.
Pentium is a registered trademark of Intel Corporation or its subsidiaries in the United States and other countries. Microsoft,
Windows, Windows NT, and Windows XP are U.S. registered trademarks of Microsoft Corporation.
© Copyright 2005 Hewlett-Packard Development Company, L.P.
The information contained herein is subject to change without notice. The only warranties for HP products and services are set
forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as
constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein.
For more information visit our website at www.hp.com
4AA0-1498ENA, 08/2005, Rev. 2.1