HP L2151ws User Guide

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Preset Display Modes 
Preset 
Pixel 
Format Horz Freq 
(kHz)
 Horz  
Polarity Vert Freq 
(Hz) Ve r t  
Polarity Pixel Clk 
(MHz)
 Source 
 
1 640 x 480  31.469  -  59.940  -  25.175  VGA 
2 720 x 400  31.469  -  70.087  +  28.322  VGA 
3 800 x 600  37.87  +  60.317  +  40.000  VESA 
4 1024x768  48.36  -  60.000  -  65.000  VESA 
5 1280x960  60.00  ±  60.000  ±  108.000  VESA 
6 1280x1024  63.98  +  60.020  +  108.000  VESA 
7 1440x900  55.94  -  59.890  +  106.500 CVT 
1.30MA 
8 1600x1200  75.00  +  60.000  +  106.500  VESA 
9 1680x1050  65.29  -  60.000  +  146.250 CVT 
1.76MA 
10 1920x1080  67.50  +  60.000  +  148.500  CEA-861 
 
 
						

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Power Cord Set Requirements 
The monitor power supply is provided with automatic line switching (ALS). This feature allows the monitor to operate 
on input voltages in the range of 100–240V∿, 50 / 60 Hz, 1.5A. 
The power cord set (flexible cord or wall plug) received with the monitor meets the requirements for use in the 
country/region where the equipment was purchased. 
If you need to obtain a power cord for a different country/region, you should purchase a power cord that is approved 
for use in that country/region. 
The power cord must be rated for the product and for the voltage and current marked on the product’s electrical 
ratings label. The voltage and current rating of the cord should be greater than the voltage and current rating marked 
on the product. In addition, the cross-sectional area of the wire must be a minimum of 0.75 mm² or 18AWG, and the 
length of the cord must be between 4.94 ft (1.5 m) and 12 ft (3.6 m). If you have questions about the type of power 
cord to use, contact your HP-authorized service provider. 
A power cord should be routed so that it is not likely to be walked on or pinched by items placed upon it or against it. 
Particular attention should be paid to the plug, electrical outlet, and the point where the cord exits from the product. 
VGA Pin Assignments                                 DVI Pin Assignments 
 
 
Pin Number 15-Pin Side of the Signal 
Cable
 
 1 Video-Red 
2 Video-Green 
3 Video-Blue 
4 Ground 
5 Detect Cable 
6 GND-R 
7 GND-G 
8 GND-B 
9 +5V 
10 Ground 
11 Ground 
12 DDC-Serial data 
13 H-sync 
14 V- s yn c 
15 DDC-Serial clock 
 
						

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Plug and Play DDC2B Feature 
This monitor is equipped with VESA DDC2B capabilities according to the VESA DDC STANDARD. It allows the 
monitor to inform the host system of its identity and, depending on the level of DDC used, communicate additional 
information about its display capabilities. 
The DDC2B is a bi-directional data channel based on the I²C protocol. The host can request EDID information over 
the DDC2B channel. 
 
LCD Monitor Quality and Pixel Policy 
 
The HP LCD Monitor uses high-precision technology, manufactured according to high standards, to help guarantee 
trouble-free performance. Nevertheless, the display may have cosmetic imperfections that appear as small bright or 
dark spots. This is common to all LCD displays used in products supplied by all vendors and is not specific to the HP 
LCD Monitor. These imperfections are caused by one or more defective pixels or subpixels. 
y A pixel consists of one red, one green, and one blue subpixel. 
y A defective whole pixel is always turned on (a bright spot on a dark background), or it is always off (a dark spot on 
a bright background). The first is the more visible of the two. 
y A defective subpixel (dot defect) is less visible than a defective whole pixel and is small and only visible on a 
specific background. 
To locate defective pixels, the monitor should be viewed under normal operating conditions and in normal operating 
mode at a supported resolution and response rate, from a distance of approximately 50 cm (16 in). 
We expect that, over time, the industry will continue to improve its ability to produce displays with fewer cosmetic 
imperfections, and we will adjust guidelines as improvements are made. 
For more information about your L2151w/L2151ws Monitor, refer to the HP Web site at: http://www.hp.com/support
 
 
Agency Regulatory Notices 
 
Federal Communications Commission Notice 
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 
of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a 
residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed 
and used in accordance with the instructions, may cause harmful interference to radio communications. However, 
there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful 
interference to radio or television reception, which can be determined by turning the equipment off and on, the user 
is encouraged to try to correct the interference by one or more of the following measures: 
y Reorient or relocate the receiving antenna. 
y Increase the separation between the equipment and the receiver. 
y Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. 
y Consult the dealer or an experienced radio or television technician for help. 
 
 
						

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Modifications 
The FCC requires the user to be notified that any changes or modifications made to this device that are not 
expressly approved by Hewlett-Packard Company may void the user’s authority to operate the equipment. 
Cables 
Connections to this device must be made with shielded cables with metallic RFI/EMI connector hoods to maintain 
compliance with FCC rules and regulations. 
Declaration of Conformity for Products Marked with FCC Logo, United States Only 
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: 
(1) this device may not cause harmful interference, and (2) this device must accept any interference received, 
including interference that may cause undesired operation. 
For questions regarding your product, contact: 
Hewlett-Packard Company 
P. O. Box 692000, Mail Stop 530113 
Houston, Texas 77269-2000 
Or 
call: 1-(800)-474-6836 
For questions regarding this FCC declaration, contact: 
Hewlett-Packard Company 
P. O. Box 692000, Mail Stop 510101 
Houston, Texas 77269-2000 
Or 
call: 1-(281)-514-3333 
To identify this product, refer to the part, series, or model number found on the product. 
Canadian Notice 
This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations. 
Avis Canadien 
Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le matériel brouilleur du 
Canada. 
 
						

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European Union Regulatory Notice 
This product complies with the following EU directives: 
y Low Voltage Directive 2006/95/EC 
y EMC Directive 2004/108/EC 
Compliance with these directives implies conformity to applicable harmonized European standards (European 
Norms) which are listed on the EU Declaration of Conformity issued by Hewlett-Packard for this product or product 
family. 
This compliance is indicated by the following conformity marking placed on the product: 
 
This marking is valid for non-Telecom products and EU 
harmonized Telecom products (e.g., Bluetooth). xxxx*  
This marking is valid for EU non-harmonized Telecom products. 
*Notified body number (used only if applicable — refer to the 
product label). 
 
Hewlett-Packard GmbH, HQ-TRE, Herrenberger Straße 140, 71034 Böblingen, Germany 
 
						

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Disposal of Waste Equipment by Users in Private Households in the European 
Union 
 
 
This symbol on the product or on its packaging indicates that this product must not be disposed of with your other 
household waste. Instead, it is your responsibility to dispose of your waste equipment by handing it over to a 
designated collection point for the recycling of waste electrical and electronic equipment. The separate collection 
and recycling of your waste equipment at the time of disposal will help to conserve natural resources and ensure that 
it is recycled in a manner that protects human health and the environment. For more information about where you 
can drop off your waste equipment for recycling, please contact your local city office, your household waste disposal 
service or the shop where you purchased the product. 
Japanese Notice 
 
 
 
 
 
 
						

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Japanese Power Cord Notice 
 
 
 
Japanese Material Content Declaration 
A Japanese regulatory requirement, defined by Specification JIS C 0950, 2005, mandates that manufacturers 
provide Material Content Declarations for certain categories of electronic products offered for sale after July 1, 2006. 
To view the JIS C 0950 material declaration for this product, visit www.hp.com/go/jisc0950. 
 
 
 
Korean Notice 
 
 
Materials Disposal 
This HP product contains Mercury in the fluorescent lamp in the display LCD that might require special handling at 
end-of-life. 
Disposal of this material can be regulated because of environmental considerations. For disposal or recycling 
information, please contact your local authorities or the Electronic Industries Alliance (EIA) (www.eiae.org
). 
HP Recycling Program 
HP offers product end-of-life return programs for HP and other manufacturers’ hardware in several geographic areas. 
The terms and availability of these programs vary by geography because of differences in regulatory requirements 
and local customer demand. For information on the HP recycling program, refer to the HP Web site at: 
http://www.hp.com/recycle
 
 
 
 
						

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ENERGY STAR® Qualification 
HP Displays marked with the ENERGY STAR® certification mark meet the requirements of the U.S. Environmental 
Protection Agency (EPA) ENERGY STAR program. The EPA ENERGY STAR® certification mark does not imply 
endorsement by the EPA.  As an ENERGY STAR Partner, Hewlett Packard Company has determined that this 
product meets the ENERGY STAR® program requirements for display energy efficiency.  
The following ENERGY STAR® certification mark appears on all ENERGY STAR qualified displays: 
 
 
 
 
 
 
 
 
The ENERGY STAR® program specifications for displays and computers were created by the EPA to promote 
energy efficiency and reduce air pollution through more energy-efficient equipment in homes, offices, and factories. 
One way products achieve this goal is by using the Microsoft Windows  power management feature to reduce power 
consumption when the product is not in use. 
The power management feature enables the computer to initiate a low-power or “sleep” mode after a period of user 
inactivity.  When used with an external ENERGY STAR® qualified display, this feature also supports similar power 
management features for the display. To take advantage of these potential energy savings, users should use the 
default power management settings that are provided with ENERGY STAR qualified computers and displays.  The 
default power management settings on ENERGY STAR qualified computers are preset to behave in the following 
ways when the system is operating on AC power: 
● Turn off an external display after 15 minutes of user inactivity 
● Initiate a low power sleep mode for the computer after 30 minutes of user inactivity 
ENERGY STAR® qualified computers exit the low power sleep mode and ENERGY STAR qualified displays resume 
operation when the user resumes use of the computer.  Examples include the user pressing the power/sleep button, 
receiving an input signal from an input device, receiving an input signal from a network connection with the Wake On 
LAN (WOL) feature enabled, etc. 
Additional information on the ENERGY STAR® program, its environmental benefits and the potential energy and 
financial savings of the power management feature can be found on the EPA ENERGY STAR Power Management 
Web site at http://www.energystar.gov/powermanagement
 
 
 
 
						

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