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2. Rack unit - Wikipedia

   en.wikipedia.org/wiki/Rack_unit

   Rack with sample component sizes including an A/V half-rack unit. A rack unit (abbreviated U or RU) is a unit of measure defined as 1 + 3 ⁄ 4 inches (44.45 mm). [1] [2] It is most frequently used as a measurement of the overall height of 19-inch and 23-inch rack frames, as well as the height of equipment that mounts in these frames, whereby the height of the frame or equipment is expressed ...

3. 19-inch rack - Wikipedia

   en.wikipedia.org/wiki/19-inch_rack

   The height of a rack can vary from a few inches, such as in a broadcast console, to a floor-mounted rack whose interior is 45 rack units (200.2 centimetres or 78.82 inches) high. 42U is a common configuration. Many wall-mounted enclosures for industrial equipment use 19-inch racks.

4. Rackmount KVM - Wikipedia

   en.wikipedia.org/wiki/Rackmount_KVM

   Rackmount lay-flat KVM. A KVM is a computer input/output device offering the combination of a keyboard, video monitor and mouse (pointing device).They are typically constructed to fit into a 19-inch rack although there are manufacturers who offer a KVM that can be mounted to a flat surface such as a control console.

5. Stackable switch - Wikipedia

   en.wikipedia.org/wiki/Stackable_switch

   Stackable switches are customarily Ethernet, rack-mounted, managed switches of 1–2 rack unit (RU) in size, with a fixed set of data ports on the front. Some models have slots for optional slide-in modules to add ports or features to the base stackable unit.

6. Open Rack - Wikipedia

   en.wikipedia.org/wiki/Open_Rack

   Open Rack is an Open Compute Project standard [1] for a new rack and power delivery architecture and an efficient, scalable alternative to the EIA-310 19-inch rack. It differs from the traditional EIA-310 rack in that it was designed specifically for large-scale cloud deployments. There are four key features that make this rack design more ...

7. Resource Unit - Wikipedia

   en.wikipedia.org/wiki/Resource_Unit

   When there is only one user in the network, if necessary it can still use the whole 20-MHz bandwidth by operating at 242-tone RU to reach higher data rate. A 52-Tone RU consists of 48 data subcarriers and 4 pilot subcarriers. 106-tone RU consists of 102 data subcarriers and 4 pilot subcarriers, while A 242-tone RU consists of 234 data ...