Be Quiet! 400W Pure Power 11 PSU, Fully Wired, Rifle Bearing Fan, 80+ Gold, Cont. Power UK-Wide Next Business Day Delivery

The efficiency certification level of a power supply or other electrical device according to the international 80 Plus standard, indicating that it meets a minimum energy‑efficiency threshold at various load levels. Typical values include Bronze, Silver, Gold, Platinum and Titanium.

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.

A comma‑separated list of extra functions or characteristics that a product offers, such as special modes, connectivity options, or unique technical capabilities. The values are typically short phrases and may include multiple items for a single product.

The colour or combination of colours that a product’s outer shell or enclosure 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 case for consumers.

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.

The type of cooling mechanism used by a product, such as active fan‑based cooling, passive heat sinks, liquid cooling, or no active cooling. It indicates whether the device relies on airflow, conduction, or other methods to dissipate heat and helps users assess thermal performance and noise levels.

The linear measurement of an object from front to back or top to bottom, expressed in a physical unit such as millimeters, centimeters, inches, etc. It indicates how deep the item is and can be used for fitting, compatibility, or spatial planning.

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 the visual content and is commonly used for monitors, TVs, smartphones, cameras, and digital images.

A brief statement indicating the edition or version of a product, such as "Reprint", "New Edition", or a numeric edition number like "2nd edition". It identifies which specific release of the item is being referenced.

The efficiency rating expresses the percentage of input power that a product converts into useful output, indicating how well it uses energy compared to similar models. A higher value means less waste and lower operating costs.

Indicates whether the product includes an EPS 12V power connector, which is commonly used to supply additional voltage to high‑performance computer components such as CPUs and GPUs.

The linear measurement across the widest part of a fan, expressed in units such as millimeters (mm), centimeters (cm) or inches (in). It represents the overall width of the fan and is useful for determining fit, compatibility with cases, and airflow characteristics.

The physical dimensions of a fan unit, expressed as the number of fans and their individual diameter in millimetres (e.g., "2 x 120mm"). This attribute helps users understand the cooling capacity and compatibility with cases or other components.

The total count of physical connector ports present on a floppy drive or its support, indicating how many separate connections are available for power and/or data. This value helps users verify compatibility with power supplies, cables, or adapters.

Specifies the physical configuration or design of a product, such as ATX, Micro‑ATX, Mini‑ITX, tower, case with cover, etc. It describes how the device is built and what mounting or expansion options it supports.

The vertical dimension of a product measured from its lowest to highest point. It is expressed in a physical unit such as millimetres, centimetres or inches and applies to any item where height is relevant, including books, electronics, furniture and other objects.

The electrical current that a device draws from its power source, expressed in amperes (A). It indicates how much current the product consumes during normal operation and helps determine compatibility with power supplies or USB ports.

Indicates whether a user manual—physical or digital—is provided with the product. A value of "Yes" means that a manual is included, while a value of "No" indicates that no manual is supplied.

The highest electrical current that a power supply can deliver on its combined +12 V rail, expressed in amperes (A). It indicates the maximum load capacity of the +12 V output and is useful for comparing power supplies or determining if a unit can meet the needs of high‑power components.

Indicates whether a product supports modular components or systems, such as modular power supplies, network switches, or other hardware that can be expanded or replaced with compatible modules.

The total count of Molex power connector ports present on a product, expressed as an integer without units. This value indicates how many Molex interfaces are available for connecting peripherals or components that require this type of connection.

The total number of electrical contacts in the ATX main power connector that supplies a computer system with power. Common values are 20+4‑pin (24 pins) and 24‑pin, indicating the standard ATX power interface used by motherboards and power supplies.

The pin configuration of the power connector(s) used by a motherboard, expressed as a textual description such as "4 + 8-Pin" or "4-Pin x 2". It indicates how many pins are present in each connector and whether multiple connectors are required for proper operation.

The sound intensity produced by a product during operation, expressed in decibels with A‑weighting (dB(A)). This value indicates how loud the device is and helps users assess suitability for quiet environments or noise‑sensitive settings.

The linear measurement from front to back or top to bottom of a product’s packaging, expressed in a physical unit such as millimeters, centimeters, inches, etc. It indicates how deep the packaged item is and can be used for fitting, compatibility, or spatial planning.

The vertical dimension of a product’s packaging measured from its lowest to highest point. It is expressed in a physical unit such as millimetres, centimetres or inches and helps customers assess how tall the package will be when stored or shipped.

The form of packaging used for a product, such as box, blister pack, bag, or pallet. It indicates how the item is contained and protected during shipping and storage.

The horizontal measurement of a product’s packaging, expressed in a linear unit such as millimetres or inches. It indicates how wide the package is from one side to the other and helps customers assess fit for storage, shipping, or display.

The arrangement of pins on a PCI‑Express connector, indicating how many power and data pins are present (e.g., "6+2-Pin", "8-Pin", "12+4-Pin"). This attribute helps determine compatibility with motherboards, GPUs, or other expansion cards that require specific pin counts for proper operation.

The electrical power rating of a product, expressed in watts (W). It indicates how much energy the device consumes during operation or how much power it can deliver to connected equipment.

The ratio of real power to apparent power in an electrical system, expressed as a dimensionless number typically between 0 and 1. It indicates how efficiently the device converts electrical energy into useful work; values closer to 1 mean less reactive power and higher efficiency.

A comma‑separated list of the electrical protection mechanisms built into a device, such as overcurrent, overload, short circuit, under voltage, and overheating safeguards. The attribute indicates which protective features are present to protect the equipment and connected components from abnormal power conditions.

A comma‑separated list of protective features that a product offers, such as resistance to dust, water, shock, heat, or other environmental factors.

The physical form factor of a power supply unit, indicating its size and mounting configuration (e.g., ATX, SFX, TFX). This attribute helps determine compatibility with computer cases and other hardware components.

The purpose indicates the primary function or intended use of a product, such as "Notebook", "Gaming", or "Server". It helps customers quickly identify whether the item matches their needs and can be used for filtering or categorization across different product categories.

The electrical current supplied by the first +12 V rail in a power distribution system, expressed in amperes (A). It indicates how much current the rail can deliver to connected components and helps assess load capacity and thermal performance.

The number of times per second that a display updates its image, expressed in hertz (Hz). It indicates the smoothness and responsiveness of motion on the screen; higher rates generally provide a more fluid visual experience.

Indicates whether the product is manufactured in accordance with the RoHS (Restriction of Hazardous Substances) directive, which limits the use of certain hazardous materials in electrical and electronic equipment.

A list of safety and regulatory certifications that a product complies with, such as CE, UL, FCC, or other regional standards.

The total count of physical SATA interfaces available on a product, including all versions (SATA I, II, III). This value indicates how many storage devices can be connected simultaneously via SATA ports.

Indicates whether the product comes with the necessary screws included in the package. A value of "Yes" means that screws are supplied, allowing the user to assemble or secure the item immediately after unpacking; a value of "No" means no screws are provided and must be purchased separately.

Indicates whether the product supports NVIDIA SLI or AMD CrossFire technology, allowing multiple graphics cards to work together for increased performance.

The maximum electrical power that a product can consume or deliver during its operation, expressed in watts (W). It represents the peak power requirement or output of the device and is useful for sizing power supplies, estimating energy usage, and comparing performance across similar products.

The length of time for which the manufacturer guarantees that the product will be free from defects in materials and workmanship, typically expressed in years or months.

The mass of the product expressed in a standard unit such as grams or kilograms. It represents how heavy the item is and can be used for shipping calculations, handling instructions, or consumer information.