Manuals

Dell U2312HM Flat Panel Monitor

About Your Monitor

Dell™ U2312HM Flat Panel Monitor User's Guide

	Package Contents
	Product Features
	Identifying Parts and Controls
	Monitor Specifications
	Plug and Play Capability
	Universal Serial Bus (USB) Interface
	LCD Monitor Quality and Pixel Policy
	Maintenance Guidelines

Package Contents

Your monitor ships with the components shown below. Ensure that you have received all the components and contact Dell if something is missing.

	NOTE: Some items may be optional and may not ship with your Monitor. Some features or media may not be available in certain countries.
	NOTE: To set up with any other stand, please refer to the respective stand setup guide for setup instructions.

	Monitor
	Stand
	Power Cable
	VGA Cable
	DVI Cable
	USB up stream cable (enables the USB ports on the monitor)
	Drivers and Documentation media Quick Setup Guide Product and Safety Information Guide

Product Features

The U2312HM flat panel display has an active matrix, Thin-Film Transistor (TFT), Liquid Crystal Display (LCD). The monitor features include:

■ 23-inch (58.42 cm) viewable area display (Measured diagonally). 1920 x 1080 resolution, plus full-screen support for lower resolutions.

■ Wide viewing angle to allow viewing from a sitting or standing position, or while moving from side-to-side.

■ Tilt, swivel, vertical extension and rotate adjustment capability. (with Enhanced Menu Rotation).

■ Removable pedestal and Video Electronics Standards Association (VESA™) 100 mm mounting holes for flexible mounting solutions.

■ Plug and play capability if supported by your system.

■ On-Screen Display (OSD) adjustments for ease of set-up and screen optimization.

■ Software and documentation media includes an information file (INF), Image color Matching File (ICM), PowerNap software application and product documentation.

■ Energy Saver feature for Energy Star compliance.

■ Security lock slot.

■ Asset Management Capability.

■ Capability to switch from wide aspect to standard aspect ratio while maintaining the image quality.

■ EPEAT Gold Rating.

■ Halogen Reduced.

■ Arsenic-Free glass and Mercury Free for Panel only.

■ Energy Gauge shows the energy level being consumed by the monitor in real time.

■ High Dynamic Contrast Ratio (DCR).

■ PowerNap and Dynamic Dimming Software included (comes in the CD attached with the monitor).

■ TCO Certified Displays.

Identifying Parts and Controls

Front View


Front View	Front panel controls

Label	Description
1	Preset Modes (default, but configurable)
2	Brightness & Contrast (default, but configurable)
3	Menu
4	Exit
5	Power (with power light indicator)

Back View


Back view	Back view with monitor stand

Label	Description	Use
1	VESA mounting holes (100 mm x 100 mm - behind attached VESA Plate)	Wall mount monitor using VESA-compatible wall mount kit (100 mm x 100 mm) .
2	Regulatory label	Lists the regulatory approvals.
3	Stand release button	Release stand from monitor.
4	Security lock slot	Secures monitor with security cable lock.
5	Dell Soundbar mounting brackets	Attaches the optional Dell Soundbar.
6	Barcode serial number label	Refer to this label if you need to contact Dell for technical support.
7	USB downstream ports	Connect your USB devices.
8	Cable management slot	Use to organize cables by placing them through the slot.

Side View



Left view	Right view

Bottom View


Bottom view	Bottom view with monitor stand

Label	Description	Use
1	AC power cord connector	Connect the power cable
2	DC power connector for Dell Soundbar.	Connect the power cord for the soundbar (optional)
3	DisplayPort connector	Connect your computer DP cable
4	DVI connector	Connect your computer DVI cable
5	VGA connector	Connect your computer VGA cable
6	USB upstream port	Connect the USB cable that came with your monitor to the monitor and the computer. Once this cable is connected, you can use the USB connectors on the side and bottom of the monitor
7	USB downstream ports	Connect your USB devices. You can only use this connector after you have connected the USB cable to the computer and USB upstream connector on the monitor.
8	Stand lock feature	To lock the stand to the monitor using M3x6 mm machine screw (screw not provided)

Monitor Specifications

Flat Panel Specifications

Screen type	Active matrix - TFT LCD
Panel type	IPS
Screen dimensions	23 inches (23-inches viewable image size)
Preset display area:	509.2 (H) X 286.4 (V) mm
Horizontal	509.2 mm (20.05 inches)
Vertical	286.4 mm (11.28 inches)
Pixel pitch	0.265 mm
Viewing angle	178° (vertical) typical 178° (horizontal) typical
Luminance output	300 cd/m²(typical)
Contrast ratio	1000 to 1 (typical), 2M : 1 (typical Dynamic Contrast On)
Faceplate coating	Antiglare with hard-coating 3H
Backlight	LED edgelight system
Response Time	8 ms gray-to-gray (typical)
Color depth	16.7 million colors
Color Gamut	82%*

*[U2312HM] color gamut (typical) is based on CIE1976 (82%) and CIE1931 (72%) test standards.

Resolution Specifications

Horizontal scan range	30 kHz to 83 kHz (automatic)
Vertical scan range	56 Hz to 76 Hz (automatic)
Maximum preset resolution	1920 x 1080 at 60 Hz

Supported Video Modes

Video display capabilities (DVI & DP playback)

480p, 576p, 720p, 1080p, 480i, 576i, 1080i

Preset Display Modes

Display Mode	Horizontal Frequency (kHz)	Vertical Frequency (Hz)	Pixel Clock (MHz)	Sync Polarity (Horizontal/Vertical)
VESA, 720 x 400	31.5	70.0	28.3	-/+
VESA, 640 x 480	31.5	60.0	25.2	-/-
VESA, 640 x 480	37.5	75.0	31.5	-/-
VESA, 800 x 600	37.9	60.0	40.0	+/+
VESA, 800 x 600	46.9	75.0	49.5	+/+
VESA, 1024 x 768	48.4	60.0	65.0	-/-
VESA, 1024 x 768	60.0	75.0	78.8	+/+
VESA, 1152 x 864	67.5	75.0	108.0	+/+
VESA, 1280 x 1024	64.0	60.0	108.0	+/+
VESA, 1280 x 1024	80.0	75.0	135.0	+/+
VESA, 1920 x 1080	67.5	60.0	148.5	+/+

Electrical Specifications

Video input signals	Analog RGB, 0.7 Volts +/- 5%, positive polarity at 75 ohm input impedance Digital DVI-D TMDS, 600mV for each differential line, positive polarity at 50 ohm input impedance DP 1.1a signal input support
Synchronization input signals	TTL levels required and separate syncs (including Trigger points), SOG (Composite SYNC on green)
AC input voltage/frequency/current	100 to 240 VAC / 50 or 60 Hz + 3 Hz / 1.5 A (Typical)
Inrush current	120 V : 30 A (Max) 240 V : 60 A (Max)

Physical Characteristics

Connector type	15-pin D-subminiature, blue connector; DVI-D, white connector; DP, black connector.
Signal cable type	Digital: Detachable, DVI-D, Solid pins, shipped detached from the monitor Analog: attachable, D-Sub, 15pins, shipped detached from the monitor
Dimensions (with stand)
Height (extended)	493.9 mm (19.44 inches)
Height (compressed)	365.0 mm (14.37 inches)
Width	546.4 mm (21.51 inches)
Depth	185.4 mm (7.30 inches)
Dimensions (without stand)
Height	323.3 mm (12.73 inches)
Width	546.4 mm (21.51 inches)
Depth	59.5 mm (2.34 inches)
Stand dimensions
Height (extended)	401.2 mm (15.80 inches)
Height (compressed)	358.1 mm (14.10 inches)
Width	279.8 mm (11.02 inches)
Depth	180.3 mm (7.10 inches)
Weight
Weight with packaging	6.47 kg (14.26 lbs)
Weight with stand assembly and cables	5.18 kg (11.42 lbs)
Weight without stand assembly (For wall mount or VESA mount considerations - no cables)	2.96 kg (6.53 lbs)
Weight of stand assembly	1.72 kg (3.79 lbs)
Front Frame Gloss	5.0 gloss unit (max.) (Black Frame) 20.0 gloss unit (max.) (Silver Frame)

Environmental Characteristics

Temperature
Operating	0 °C to 40 °C
Non-operating	Storage: -20 °C to 60 °C (-4 °F to 140 °F) Shipping: -20 °C to 60 °C (-4 °F to 140 °F)
Humidity
Operating	10% to 80% (non-condensing)
Non-operating	Storage: 5% to 90% (non-condensing) Shipping: 5% to 90% (non-condensing)
Altitude
Operating	3,048 m (10,000 ft) max
Non-operating	10,668 m (35,000 ft) max
Thermal dissipation	238.85 BTU/hour (maximum) 102.36 BTU/hour (typical)

Power Management Modes

If you have VESA's DPM™ compliance display card or software installed in your PC, the monitor can automatically reduce its power consumption when not in use. This is referred to as Power Save Mode*. If the computer detects input from keyboard, mouse, or other input devices, the monitor automatically resumes functioning. The following table shows the power consumption and signaling of this automatic power saving feature:

VESA Modes	Horizontal Sync	Vertical Sync	Video	Power Indicator	Power Consumption
Normal operation	Active	Active	Active	Blue	70W (maximum) ** 30W (typical)
Active-off mode	Inactive	Inactive	Blanked	Amber	Less than 0.5 W
Switch off	-	-	-	Off	Less than 0.5 W

The OSD will only function in the normal operation mode. When any button is pressed in Active-off mode, one of the following messages will be displayed:

Activate the computer and the monitor to gain access to the OSD.

NOTE: This monitor is ENERGY STAR^®-compliant.

* Zero power consumption in OFF mode can only be achieved by disconnecting the main cable from the monitor.
** Maximum power consumption with max luminance, Dell Soundbar, and USB active.

Pin Assignments

VGA Connector

Pin Number	15-pin Side of the Connected Signal Cable
1	Video-Red
2	Video-Green
3	Video-Blue
4	GND
5	Self-test
6	GND-R
7	GND-G
8	GND-B
9	Computer 5V/3.3V
10	GND-sync
11	GND
12	DDC data
13	H-sync
14	V-sync
15	DDC clock

DVI Connector

Pin Number	24-pin Side of the Connected Signal Cable
1	TMDS RX2-
2	TMDS RX2+
3	TMDS Ground
4	Floating
5	Floating
6	DDC Clock
7	DDC Data
8	Floating
9	TMDS RX1-
10	TMDS RX1+
11	TMDS Ground
12	Floating
13	Floating
14	+5V/+3.3V power
15	Self test
16	Hot Plug Detect
17	TMDS RX0-
18	TMDS RX0+
19	TMDS Ground
20	Floating
21	Floating
22	TMDS Ground
23	TMDS Clock+
24	TMDS Clock-

DisplayPort Connector

Pin Number	20-pin Side of the Connected Signal Cable
1	ML0(p)
2	GND
3	ML0(n)
4	ML1(p)
5	GND
6	ML1(n)
7	ML2(p)
8	GND
9	ML2(n)
10	ML3(p)
11	GND
12	ML3(n)
13	GND
14	GND
15	AUX(p)
16	GND
17	AUX(n)
18	HPD
19	DP_PWR Return
20	+3.3V DP_PWR

Plug and Play Capability

You can install the monitor in any Plug and Play-compatible system. The monitor automatically provides the computer system with its Extended Display Identification Data (EDID) using Display Data Channel (DDC) protocols so the system can configure itself and optimize the monitor settings. Most monitor installations are automatic; you can select different settings if desired. For more information about changing the monitor settings, see Operating the Monitor.

Universal Serial Bus (USB) Interface

This section gives you information about the USB ports that are available on the left side of your monitor.

NOTE: This monitor supports High-Speed Certified USB 2.0 interface.

Transfer speed	Data Rate	Power Consumption
High speed	480 Mbps	2.5W (Max., each port)
Full speed	12 Mbps	2.5W (Max., each port)
Low speed	1.5 Mbps	2.5W (Max., each port)

USB Upstream Connector

Pin Number	4-pin Side of the Connector
1	DMU
2	VCC
3	DPU
4	GND

USB Downstream Connector

Pin Number	4-Pin Side of the Signal Cable
1	VCC
2	DMD
3	DPD
4	GND

USB Ports

1 upstream - back
4 downstream - 2 on back; 2 on left side

NOTE: USB 2.0 functionality requires a USB 2.0-capable computer

NOTE: The monitor's USB interface works only when the monitor is on or in power save mode. If you turn off the monitor and then turn it on, the attached peripherals may take a few seconds to resume normal functionality.

LCD Monitor Quality and Pixel Policy

During the LCD Monitor manufacturing process, it is not uncommon for one or more pixels to become fixed in an unchanging state which are hard to see and do not affect the display quality or usability. For more information on Dell Monitor Quality and Pixel Policy, see Dell Support site at: support.dell.com.

Maintenance Guidelines

Cleaning Your Monitor

	WARNING: Read and follow the safety instructions before cleaning the monitor.
	WARNING: Before cleaning the monitor, unplug the monitor power cable from the electrical outlet.

For best practices, follow the instructions in the list below while unpacking, cleaning, or handling your monitor:

To clean your antistatic screen, lightly dampen a soft, clean cloth with water. If possible, use a special screen-cleaning tissue or solution suitable for the antistatic coating. Do not use benzene, thinner, ammonia, abrasive cleaners, or compressed air.
Use a lightly-dampened, warm cloth to clean the monitor. Avoid using detergent of any kind as some detergents leave a milky film on the monitor.
If you notice white powder when you unpack your monitor, wipe it off with a cloth.
Handle your monitor with care as a darker-colored monitor may scratch and show white scuff marks more than a lighter-colored monitor.
To help maintain the best image quality on your monitor, use a dynamically changing screen saver and turn off your monitor when not in use.

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