Specifications
Model HP LaserJet Pro 200 color Printer M251n CF146A 
Technical Spec  Print speed black: Normal:Up to 14 ppm
Print speed color: Normal:Up to 14 ppm
(Measured using ISO/IEC 24734, excludes first set of test documents. For more information see http://www.hp.com/go/printerclaims. Exact speed varies depending on the system configuration, software application, driver, and document complexity. )
First page out (ready):
Black:As fast as 18.5 sec
Color:As fast as 19 sec
Print quality black (best): Up to 600 x 600 dpi
Print quality color (best): Up to 600 x 600 dpi
Duty cycle (monthly, letter): Up to 30,000 pages;
(Duty cycle is defined as the maximum number of pages per month of imaged output. This value provides a comparison of product robustness in relation to other HP LaserJet or HP Color LaserJet devices, and enables appropriate deployment of printers and MFPs to satisfy the demands of connected individuals or groups. )
Duty cycle (monthly, A4): Up to 30,000 pages
(Duty cycle is defined as the maximum number of pages per month of imaged output. This value provides a comparison of product robustness in relation to other HP LaserJet or HP Color LaserJet devices, and enables appropriate deployment of printers and MFPs to satisfy the demands of connected individuals or groups. )
Recommended monthly page volume: 250 to 1500
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: 750 MHz
Print languages: 
HP PCL 6, HP PCL 5c, HP postscript level 3 emulation (via Universal Print Driver)
Display: 2-line graphical LCD (text) 
Connectivity  HP ePrint capability: Yes
Mobile printing capability: HP ePrint, Apple AirPrint™
(HP ePrint: Requires an Internet connection to the printer. Feature works with any Internet- and e-mail-capable device. For details, http://www.hp.com/go/ePrintCenter.)
Wireless capability: No
Connectivity, standard:
1 Hi-Speed USB 2.0 port
1 Ethernet 10/100Base-TX network port
Network ready: Standard (built-in Ethernet)
Minimum system requirements:
Microsoft® Windows® 7, Windows Vista®: 1 GHz 32-bit(x86) or 64-bit(x64) processor, 1 GB RAM (32-bit) or 2 GB RAM (64-bit), 200 MB free hard disk space, CD/DVD-ROM or Internet, USB or Network port; Windows® XP (32-bit) (SP2): Pentium® 233 MHz processor, 512 MB RAM (32-bit) or 2 GB RAM (64-bit), 200 MB free hard disk space, CD/DVD-ROM or Internet, USB or Network port;
Mac OS X v 10.5, v 10.6, v 10.7; PowerPC G4, G5, or Intel® Core™ Processor; 256 MB RAM; 300 MB free hard disk space; CD/DVD-ROM or Internet; USB or Network port
Compatible operating systems:
Full software installs supported on: Microsoft® Windows®7 32-bit and 64-bit, Windows Vista® 32-bit and 64-bit, Windows® XP 32-bit (SP2 or higher)
Driver only installs supported on: Microsoft® Windows® Server 2008 32-bit and 64-bit, Windows® Server 2003 32-bit (SP3 or higher)
Mac OS X v 10.5, v 10.6, v10.7
Linpus Linux (9.4, 9.5), Red Hat Enterprise Linux 5.0 (supported with a pre-built package)
SUSE Linux (10.3, 11.0, 11, 11.1, 11.2), Fedora (9, 9.0, 10, 10.0, 11.0, 11, 12, 12.0), Ubuntu (8.04, 8.04.1, 8.04.2, 8.10, 9.04, 9.10, 10.04), Debian (5.0, 5.0.1, 5.0.2, 5.0.3) (supported by the automatic installer)
HPUX 11 and Solaris 8/9 
Memory Spec  Memory, standard: 128 MB
Memory, maximum: 128 MB
Hard disk: None 
Paper handling  Paper handling input, standard: 150-sheet input tray
Paper handling output, standard: 125-sheet output bin
Duplex printing: Manual (driver support provided)
Media sizes supported:
A4, A5, A6, B5 (JIS), 16K; 10 x 15 cm, postcards (JIS single, JIS double); envelopes (DL, C5, B5)
Media sizes, custom: 76 x 127 to 216 x 356 mm
Media types:
Paper (bond, brochure, colored, glossy, heavy, letterhead, light, photo, plain, preprinted, prepunched, recycled, rough), transparencies, labels, envelopes, cardstock
Supported media weight:
60 to 163 g/m² (up to 220 g/m² with HP laser glossy photo papers)
Finished output handling: Sheetfed 
Power and Operating Requirements  Power:
Input voltage: 110 to 127 VAC (+/- 10%), 60 Hz (+/- 3 Hz); 220 to 240 VAC (+/- 10%), 50 Hz (+/- 3 Hz)
Power consumption:
315 watts (Printing), 11.5 watts (Ready), 5.1 watts (Sleep), 0.2 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
Operating temperature range: 15 to 32.5ºC
Operating humidity range: 20 to 70% RH 
Dimentions (W x D x H) 405 x 512 x 250 mm (input tray extended to legal-size)