DELL 23.8" Touchscreen Desktop OptiPlex 5490

The operating frequency of the alternating current supplied to an AC adapter, expressed in hertz (Hz). It indicates the mains frequency range that the charger can handle and ensures proper operation with the connected device.

The range of alternating current voltage that an AC adapter can accept, expressed in volts (V). It specifies the minimum and maximum supply voltages compatible with the device, ensuring safe operation across different regions and power standards.

Indicates whether the display panel has an anti‑glare coating or treatment that reduces reflections and improves visibility in bright lighting conditions.

The model of the audio processing chip integrated into a device, indicating the specific hardware responsible for sound generation and decoding.

The specific version of the Bluetooth standard supported by a product, expressed as a numeric value (e.g., 4.2, 5.0) or with additional descriptors such as "+HS" or feature lists. This attribute indicates the capabilities and compatibility for wireless communication.

Specifies the type of interface or mechanism used to secure a cable in its port, such as Kensington, Noble, IBM, or other standard lock slots. This attribute helps users identify compatibility and security features of the 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.

The pixel dimensions of a display or image output, expressed as width by height (e.g., 1920x1080). It indicates the number of pixels that can be shown on the screen and is used to assess clarity, detail, and compatibility with media formats.

The colour or combination of colours that a product is available in, expressed as common names such as "Black", "Silver" or comma‑separated lists like "Black, White". It indicates the visual appearance of the item for consumers.

The proportion of a reference color space that a display can reproduce, expressed as a percentage. This metric indicates how closely the device’s screen matches standards such as sRGB, NTSC, DCI‑P3 or Adobe RGB, helping users compare visual fidelity across monitors and other visual devices.

List of the memory card types that a device can read or write, such as MicroSD (TransFlash), SD, MMC, CompactFlash, and others. Each value represents a format that the device’s slot or reader supports for storage expansion.

The maximum electrical power that a device can consume or supply when its thermal design power is configured to a lower setting, expressed in watts (W). This value indicates the energy capacity of the product under reduced operating conditions and helps users compare efficiency, size power supplies, and estimate operational costs.

The amount of light emitted per unit area from a display surface, measured in candela per square meter (cd/m²). It indicates how bright the screen will appear under typical viewing conditions and allows users to compare brightness levels 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.

A comma‑separated list of model identifiers for input devices such as keyboards, mice or other peripherals that are compatible with the product. Each value represents a distinct device model and can include variations in color, size or configuration.

The total amount of internal memory available in a device, expressed as a data size such as megabytes (MB) or gigabytes (GB). It indicates how much information the component can hold for active processes and affects multitasking performance.

The type of memory physically installed inside a device, such as DDR4 SDRAM, LPDDR3, or other RAM variants. It indicates the architecture and generation of the internal memory modules that the product uses or supports.

The largest amount of internal random‑access memory that a device can support, expressed as a data size such as megabytes or gigabytes. It indicates the maximum capacity for active processes and multitasking performance.

The physical configuration or size classification of a memory module, such as SO‑DIMM, UDIMM, RDIMM, or on‑board. It indicates the form factor that determines compatibility with motherboards and other hardware components.

The form factor of the memory module that a product can accept, such as DIMM or SO‑DIMM. It indicates whether the device uses standard desktop RAM modules (DIMM) or smaller laptop‑style modules (SO‑DIMM).

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.

The altitude interval (in meters) at which a product or component ceases to function correctly due to environmental factors such as reduced atmospheric pressure, temperature changes, or other elevation‑related effects. The value is expressed as a minimum–maximum range and applies to any device that has documented limits for operation above or below certain heights.

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 range of relative humidity (in percentage) within which the product is designed to operate reliably. Values are expressed as a minimum–maximum interval such as "20 - 80 %" and indicate the acceptable environmental moisture level for optimal performance.

The operating system that is installed on the device, indicating the software platform that manages hardware resources and provides services for applications. It can be a commercial OS such as Windows or macOS, an open‑source distribution like Linux, or a proprietary firmware used in embedded devices.

A list of natural languages in which the operating system installed on a device is available or supported, allowing users to identify the language options for the OS interface and documentation.

The range of temperatures in which a product can safely operate without risk of damage or performance degradation. Values are expressed in degrees Celsius (°C) and may represent a single temperature, a minimum–maximum interval, or an average operating point.

The specific technology used to construct the display panel, such as IPS, TN, VA, OLED, or LCD. It indicates how pixels are controlled and affects image quality, color accuracy, viewing angles, and power consumption.

Represents the physical dimensions of a single pixel on a display or imaging device, expressed as width and height in a length unit (e.g., millimeters). This attribute allows comparison of the physical resolution across screens, cameras, and other pixel‑based technologies.

A collection of software applications that come installed on the product by default, such as operating systems, drivers, antivirus suites, productivity tools or other essential utilities.

The highest clock speed a processor can reach when its turbo or boost feature is active, expressed in hertz (Hz). This value indicates the peak performance capability of the CPU under load and helps users compare how fast a processor can run beyond its base clock speed.

The amount of internal memory reserved for a processor’s cache, expressed in units such as megabytes (MB) or gigabytes (GB). This value indicates how much data the CPU can store locally to accelerate access and improve performance.

The root‑mean‑square (RMS) power rating of a device, expressed in watts (W). It represents the average electrical power that the product can deliver or consume under normal operating conditions.

List of physical or logical interfaces that a solid‑state drive can use to connect with other components, such as PCI Express (PCIe), Serial ATA (SATA), NVMe, U.2 or other standard connections.

The type of storage medium used in the product, such as SSD, HDD, eMMC, Flash, or hybrid combinations. It indicates whether the device uses solid‑state, magnetic, or other forms of memory and helps users understand the underlying technology.

The range of relative humidity (expressed as a percentage) within which the storage device is designed to operate reliably. Values are given as a minimum–maximum interval such as "10 - 90 %" and indicate the acceptable environmental moisture level for optimal performance.

The range of temperatures in which a device can safely operate without risk of damage or performance degradation. Values are expressed in degrees Celsius (°C) and may represent a single temperature, a minimum–maximum interval, or an average operating point.

A list of the wireless networking protocols and frequency bands that a device can connect to, such as IEEE 802.11a, IEEE 802.11b, IEEE 802.11g, Wi‑Fi 4 (802.11n), Wi‑Fi 5 (802.11ac) or Wi‑Fi 6 (802.11ax). The values are typically separated by commas and may include both the technical name and a consumer‑friendly label.

The count of USB 3.2 Gen 2 (also known as USB 3.1 Gen 2) Type‑A connectors available on the product. This indicates how many high‑speed USB ports of this specific standard are present, allowing users to assess connectivity capacity for peripherals such as external drives or docking stations.

A list of the wireless networking protocols and frequency bands that a device can connect to, such as 802.11a, 802.11b, 802.11g, Wi‑Fi 4 (802.11n), Wi‑Fi 5 (802.11ac) or Wi‑Fi 6 (802.11ax). The values are typically separated by commas and may include both the technical name and a consumer‑friendly label.