NEC MultiSync E221N

The frequency of the alternating current supplied to the device, expressed in hertz (Hz). It indicates the acceptable operating range for the electrical mains that powers the product.

The alternating current voltage range that the product accepts from its power source, expressed in volts (V). It indicates the minimum and maximum supply voltages compatible with the device.

Indicates whether a monitor or graphics card supports AMD’s Adaptive Sync technology, FreeSync. A value of "Yes" means the device is compatible; "No" means it does not support the feature.

The illumination source used behind a display panel, such as LED, WLED, CCFL or LCD. It determines the brightness uniformity, power consumption and color performance of the screen.

Indicates whether the product includes a built‑in camera that can capture images or video directly, without requiring an external device. A value of "Yes" means the device has such a camera; "No" means it does not.

A list of software programs and utilities that come pre-installed or bundled with the product, such as operating systems, drivers, antivirus suites, or other essential applications.

Indicates whether the product includes a slot for inserting a cable lock, such as a Kensington or similar security device.

A list of the cable types that are supplied with the product, such as USB, HDMI, VGA, DisplayPort, LAN (RJ‑45), SATA, audio or other relevant connectors.

A list of official certifications or compliance marks that the product has received from regulatory bodies, safety organizations, or industry standards groups. Each entry represents a distinct certification such as CE, FCC, RoHS, UL, or WEEE, and may include additional details like version numbers or specific test reports.

A list of regulatory, environmental, safety, and quality certifications that a product meets. Each entry may be a single certification (e.g., "RoHS", "CE") or a group of related certifications separated by commas (e.g., "CE, FCC, RoHS"). The attribute captures all applicable compliance marks for the item.

Indicates whether the product includes a power‑saving feature that reduces energy consumption when the device is idle or in low‑activity states.

The visual technology used by the product’s screen, such as LCD, LED, OLED, TFT or analog. It indicates the underlying display panel that determines image quality, color reproduction and power consumption.

The total count of distinct colours that a product’s display can reproduce. This value indicates the colour depth or gamut capability of the screen, helping users compare visual fidelity across devices.

The pixel dimensions of a display or image, expressed as width by height (e.g., 1920x1080). It indicates how many pixels are used to render visual content and is commonly used for monitors, TVs, smartphones, cameras, and digital images.

Indicates whether the display supports the standard sRGB color space, which defines a common range of colors for accurate and consistent visual output across devices.

The total count of physical or virtual display output connections available on a device, such as HDMI, DisplayPort, DVI, VGA, or USB‑C ports that support video output.

Indicates how many DVI connectors are present on the product. The value is a simple integer representing the total count of DVI ports, regardless of type or version.

Indicates whether the product offers an energy‑saving or low‑power operating mode that reduces consumption during idle or normal use. The value is typically "Yes" if the feature is available and "No" otherwise.

The energy efficiency class indicates the relative energy performance of a product, expressed with letters ranging from A+++ (most efficient) to G (least efficient). It allows consumers to compare expected operating costs and environmental impact across similar items.

Indicates whether the product includes an Ethernet LAN interface for wired network connectivity, allowing data transmission over RJ‑45 or compatible cables.

The pixel dimensions of a screen’s display expressed as width by height (e.g., 1920×1080). It indicates the number of pixels that can be shown on the monitor or device, affecting image sharpness and clarity.

Indicates whether a device supports HDCP (High‑bandwidth Digital Content Protection), allowing it to play or display protected digital content on compatible screens and audio/video equipment.

Indicates whether the product has a dedicated headphone output for connecting headphones or earphones. The value may be "Yes" or "No", or it can specify the type of connector such as "3.5 mm jack", "USB‑C", or other descriptive terms.

The ability of a product to change its vertical dimension, typically measured in millimetres, centimetres or inches. It indicates whether the user can raise or lower the item and, if so, by how much. This attribute applies to monitors, desks, furniture, stands and other equipment that offer adjustable height.

The range of frequencies, expressed in kilohertz (kHz), over which a device can process or display horizontal signals or scan lines. It indicates the minimum and maximum operating frequencies for horizontal scanning operations.

A list of the functions or statuses that an LED indicator on a device can display, such as power status, activity, link, and other operational signals.

The proportion between the width and height of a screen or image, expressed as two numbers separated by a colon (e.g., 16:9). It indicates whether content is designed for widescreen, square, or other aspect ratios and helps users match devices to their media formats.

Indicates whether the product operates without flickering, ensuring a smooth visual experience for users.

The range of altitudes (in meters) at which a product or component can operate reliably without performance degradation due to changes in atmospheric pressure, temperature, or other altitude‑related effects.

The pair of horizontal and vertical dimensions in millimetres that a product supports for VESA mounting (e.g., "100 × 100 mm"). This value indicates the exact hole spacing required by a mounting bracket to secure the device. It is used for monitors, TVs, projectors and other display equipment that can be wall‑mounted or attached to stands.

The underlying display panel technology used in a visual device, such as IPS, TN, VA, OLED, AMOLED, or other variants. It indicates the type of liquid crystal arrangement or organic light‑emitting structure that determines image quality, color accuracy, viewing angles and power consumption.

Represents the physical size of a single pixel on a display, expressed as width and height in a length unit (e.g., millimeters). This attribute allows comparison of the physical resolution of screens or imaging devices that use metric units to describe the smallest visible point.

Indicates whether a quick‑start guide is provided with the product. A value of "Yes" means that a brief, introductory manual or overview is included to help users get started quickly; "No" indicates that no such guide is supplied.

The time interval between a stimulus and the corresponding response of a device or system, expressed in units such as milliseconds (ms). It indicates how quickly the product reacts to input or processes data, which is critical for performance-sensitive applications like displays, gaming monitors, and interactive devices.

The maximum angular range a device can rotate or tilt, expressed as a numeric interval in degrees (e.g., "-45 to 45°"). It indicates how far the product can pivot left/right or up/down from its neutral position.

Indicates whether a product, such as a monitor or other device, can rotate around its vertical axis to adjust viewing angle. A value of "Yes" means the item supports swiveling; "No" means it does not.

Indicates whether a device is configured as a thin client, meaning it relies on a remote server for processing while using only a local display interface. A value of "Yes" means the thin‑client setup is ready for use; "No" indicates that the configuration has not been applied or is not present.

Indicates whether a product can be tilted or adjusted vertically, allowing the user to change its viewing angle. A value of "Yes" means the device supports tilt; "No" means it does not.

The range of angles, expressed in degrees, that a product can be tilted or adjusted vertically while maintaining acceptable performance or usability. It indicates the minimum and maximum tilt limits for devices such as monitors, stands, or other adjustable equipment.

Indicates whether a product includes an integrated television tuner that can receive broadcast signals directly without requiring an external receiver. The value is "Yes" or "No", representing the presence or absence of this feature.

The range of vertical scan frequencies (in hertz) that a display device can support. It indicates the minimum and maximum refresh rates at which the screen updates vertically, affecting visual smoothness and stability.

Indicates whether a product supports the VESA mounting standard, which defines the size and placement of mounting holes on displays or monitors. The value can be "Yes" or "No", or it may specify one or more VESA patterns such as "100 × 100 mm" to indicate the exact dimensions supported.

The overall visual area of a monitor’s display measured along its diagonal, expressed in inches or centimeters. It indicates how large the screen appears to the user and is commonly used to compare monitors, televisions, laptops, tablets, and other electronic devices.