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A rack unit, U or RU as a unit of measure describes the height of electronic equipment designed to mount in a 19-inch rack or a 23-inch rack. [1]

16 relations: Competitive local exchange carrier, Computing, DV, Electronic Industries Alliance, Enclosure (electrical), Eurocard (printed circuit board), Height, Horizontal pitch, Incumbent local exchange carrier, Information technology, KVM switch, List of unusual units of measurement, Network switch, Router (computing), Server (computing), 19-inch rack.

Competitive local exchange carrier

A competitive local exchange carrier (CLEC), in the United States and Canada, is a telecommunications provider company (sometimes called a "carrier") competing with other, already established carriers (generally the incumbent local exchange carrier (ILEC)).

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Computing is any goal-oriented activity requiring, benefiting from, or creating algorithmic processes—e.g. through computers.

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DV is a format for storing digital video.

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Electronic Industries Alliance

The Electronic Industries Alliance (EIA; until 1997 Electronic Industries Association) was a standards and trade organization composed as an alliance of trade associations for electronics manufacturers in the United States.

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Enclosure (electrical)

An electrical enclosure is a cabinet for electrical or electronic equipment to mount switches, knobs and displays and to prevent electrical shock to equipment users and protect the contents from the environment.

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Eurocard (printed circuit board)

Eurocard is a European standard format for PCB cards, which can be plugged together into a standardized subrack.

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Height is the measurement of vertical distance, but has two meanings in common use.

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Horizontal pitch

Horizontal pitch (HP) is a unit of length defined by the Eurocard printed circuit board standard used to measure the horizontal width of rack mounted electronic equipment, similar to the rack unit (U) used to measure vertical heights of rack mounted equipment.

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Incumbent local exchange carrier

An incumbent local exchange carrier (ILEC), is a local telephone company which held the regional monopoly on landline service before the market was opened to competitive local exchange carriers, or the corporate successor of such a firm.

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Information technology

Information technology (IT) is the application of computers and telecommunications equipment to store, retrieve, transmit and manipulate data, often in the context of a business or other enterprise.

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KVM switch

A KVM switch (with KVM being an abbreviation for "keyboard, video and mouse") is a hardware device that allows a user to control multiple computers from one or more sets of keyboards, video monitors, and mice.

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List of unusual units of measurement

An unusual unit of measurement is a unit of measurement that does not form part of a coherent system of measurement; especially in that its exact quantity may not be well known or that it may be an inconvenient multiple or fraction of base units in such systems.

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Network switch

A network switch (also called switching hub, bridging hub, officially MAC bridge) is a computer networking device that connects devices together on a computer network, by using packet switching to receive, process and forward data to the destination device.

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Router (computing)

A router is a networking device that forwards data packets between computer networks.

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Server (computing)

A server is both a running instance of some software that is capable of accepting requests from clients, and the computer that executes such software.

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19-inch rack

A 19-inch rack is a standardized frame or enclosure for mounting multiple equipment modules.

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Redirects here:

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[1] https://en.wikipedia.org/wiki/Rack_unit

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