HP Officejet Pro X451dn and X551dw

Product Overview

Device type
A4 single-function color inkjet printers

Print only

Introductory list price (USD)
X451dn: $449
X451dw: $499
X551dw: $599

Release date
X451dn and X551dw: February 2013
X451dw: June 2013

Print speed (b&w / color)
X451dn, dw: 55/55 ppm (36/36 ppm ISO)
X551dw: 70/70 ppm (42/42 ppm ISO)

Monthly duty cycle
X451dn, dw: 50,000 pages
X551dw: 75,000 pages

Cost per page (b&w, toner only)

Cost per page (b&w)
1.30 cents

Cost per page (color, toner only)

Cost per page (color)
6.75 cents


In February, HP released two new A4 single-function color inkjet printers in the United States. The Officejet Pro X451dn prints 55 pages per minute (ppm) in black and white and color and has a maximum monthly duty cycle of 50,000 pages, while the X551dw has a print speed of 70 ppm and a 75,000-page monthly duty cycle.  These new desktop high-speed inkjets are among fastest to date thanks to HP’s PageWide Technology, which features a new generation of page-wide print heads based on Scalable Print Technology. The new OfficeJet Pro printers come with standard automatic duplexing as well as a paper capacity of 500 sheets, which is expandable to 1,050 sheets with the addition of an optional 500-sheet tray. The machines have a maximum print resolution of 1,200-by-600 dpi when printing monochrome and 2,400-by-600 dpi in color. All of the machines ship with built-in Ethernet connectivity and the devices are also capable of mobile printing.  The “w” models also support wireless connectivity. In addition to launching the new machines in the U.S., HP released the X451dw printer in some Asian and EMEA nations. This printer shares many features with the X451dn, including a 2-inch monochrome screen, but adds wireless connectivity.

These first machines in HP’s Officejet Pro X line employ a new fully-pigmented, four-color ink set in a new set of high and low yield SKUs. The standard-yield HP 970 black ink tank prints 3,000 pages, while the high-yield HP 970 XL black SKU is rated at 9,200 pages. The individual color ink tanks (HP 971) each have a yield of 2,500 pages, while each high-yield color SKU (HP 971XL) prints 6,600 pages. The best CPP of the ink tanks only is 1.30 cents in black and 6.75 cents in color when printing with the XL tanks. The CPP figures are competitive with other business-class inkjet machines.

The X451dn and X551dw have price tags of $449 and $599, respectively, and are available now in North America. The X451dw will be available in North America in June 2013 with an MSRP of $499. The new printers are competitive with Epson’s business-class WorkForce Pro WP-4090, which is a slower device. The OfficeJet Pro printers are likely to be compared with Memjet-powered desktop office machines like the C6010 single-function printer. The Memjet machines lack of automatic duplexing, however, and employ a dye-based ink set. The Memjet printer has a higher MSRP, which we suspect will give HP a competitive advantage.

Software Utilities


HP Web Jetadmin; Embedded Web Server; HP Driver Configuration Utility; HP Driver Deployment Utility; HP Utility (Mac); HP Update; Bing Toolbar; HP Smart Print.
Windows Installer and discrete PCL 6 driver; Mac Installer and PS driver;


X451dn, dw: Wireless, Auto-off
X551dw: Wireless, front USB


Standard Yield

High Yield

Black yield
5% coverage

3,000 pages
9,200 pages

Black cartridge price (USD)

Color yield (CMY, per unit)
2,500 pages
6,600 pages

Color (CMY) cartridge price (USD, per unit)

Photoconductor unit yield

Photoconductor unit price (USD)

Waste toner container yield

Waste toner container price (USD)

Maintenance kit fuser yield

Maintenance kit fuser price (USD)

Additional Hardware Specifications


Print resolution
monochrome: 1,200 × 600 dpi
color: 2,400 x 600 dpi


Scanner type

Automatic document feeder

512 MB

Hard disk drive

792 MHz

X451dn:  1 Hi-Speed USB 2.0 Host; 1 Hi-Speed USB 2.0 Device; 1 Ethernet 10/100 Base-TX network

X451dw: 1 Hi-Speed USB 2.0 Host; 1 Hi-Speed USB 2.0 Device; 1 Ethernet 10/100
Base-TX network; 802.11 b/g/n Station; 802.11 b/g Access Point

X551dw: 2 Hi-Speed USB 2.0 Host; 1 Hi-Speed USB 2.0 Device; 1 Ethernet 10/100
Base-TX network; 802.11 b/g/n Station; 802.11 b/g Access Point


Network protocols
IPP, (IPv4,IPv6); ARP (Legacy Default IP); BOOTP; SMTP; LLMNR; Bonjour; LP/APIPA; NetBIOS/WINS; LPR(SLP)/LPD; Custom Raw Port/Port9100; DNS Resolver; mDNS; SNMPv1; Web Services Discovery;
Web Services Print; DHCP options: 81/RFC4702/ RFC4704, 12-Hostname; 44; Syslog; Firewall; SSL/TLS (HTTPs)


Watts – maximum


Watts – operating
70 watts

Watts – standby mode
9.5 watts

Watts – sleep mode
4.5 watts

Paper capacity
500-sheet input tray, 50-sheet multi-purpose tray: 550 sheets standard
Tray 3: 16 to 32 lb (plain paper); 33 to 66 lb (photo); 32 to 48 lb (brochure); 90 to 110 lb. (card)

Paper size (trays)
Tray 1: 3 x 5 to 8.5 x 14 inches; Tray 2: 4.0 x 8.3 to 8.5 x 11.7 inches
2, 500-sheet cassettes (1,600 sheets)

Paper weight
Cassette: 16-32 lb. bond
Multipurpose: 16-53 lb. bond

16-32 lb. bond

HP PCL 5c, HP PCL XL (PCL 6), native PDF, HP Postscript Level 3 emulation

Operating systems
Microsoft Windows 7, Windows 8, Windows Vista, Windows XP (SP3, 32-bit), Windows 2003 Server (Standard Edition, Enterprise Edition, 32-bit & 64-bit), Windows 2003 Server R2 (Standard Edition, Enterprise Edition, 32-bit & 64-bit), Windows Small Business Server 2003 (32-bit & 64-bit), Windows 2008 Server (Standard Edition,Enterprise Edition, 32-bit & 64-bit), Windows Small Business Server 2008 (64-bit),Windows 2008 Server R2 (Standard Edition, Enterprise Edition, 64-bit), Windows Small Business Server 2011, Windows Server 2012, Windows Cluster (Windows Server 2008R2), Windows Terminal Services (Windows Server 2008 R2), Windows 2003 Server Terminal Services with Citrix Metaframe XP with Feature Release 3, Windows Server 2003 Terminal Services with Citrix Presentation Server 4.0/4.5, Windows Server 2008 Terminal Services, Windows Server 2008 Terminal Services with Citrix XenApp, Citrix (Print): Xen Server 5.6, Xen Desktop 5.5, Citrix XenApps 6.0, Citrix XenApp 6.5, Novell Netware 6/6.5/Open Enterprise Server 6.5 (Novell iPrint support only), Linux
Mac OS X v10.6, Mac OS X Lion, Mac OS X Mountain Lion, Linux

Size (width x depth x height)
X451dn, dw: 20.3 x 15.7 x 15 in
X551dw: 20.3 x 15.7 x 16.3 inches



One-year, exchange warranty, service and support; one-year technical phone support,
chat, and e-mail