Abstract: A rack for an electronics assembly comprises:

Abstract: A rack for an electronics assembly comprises:

Abstract: An electronics assembly comprises:

Abstract: An electronics assembly comprises:

Abstract: A rack mountable system unit includes a housing having first and second sides. First and second elongate plastics slides are secured to respective sides of the system unit. Each plastic slide is dimensioned to slide within a rack mountable rail and is tapered at one end thereof to facilitate insertion into the rail. The tapered end of the slides facilitates insertion into the rails and the use of plastics facilitates sliding. The maximum height of the slide is dimensioned to slide within the rack mountable rail. To further facilitate the sliding of the system unit along the racking, the sides include narrower portions alternating with portions dimensioned to slide within the rack mountable rail. The slides each have a flange and a releasable fixing at a front end thereof for securing the system unit to rack mountable rails.

Abstract: A modular electronic circuit is described wherein circuit boards extending across the width of circuit module are removable through an access opening substantially coextensive with the front face of the module. A hinge component for mounting an access door and a grip for extracting a module from a mounting rack is also described.

Abstract: An electrically powered cooling unit (130), such as a fan unit, is mountable on a support structure (110) within a housing (140), for example a computer housing. The support structure (110) can mount one or more electrically powered cooling units (130). Each cooling unit (130) includes an electrical connector (400) fixed relative to the cooling unit and cooperable with a connector of the support structure, so that offering the cooling unit up to its mounting position completes the electrical connections between the cooling unit and the support structure. In alternative embodiments, a single structure is used both to physically support and electrically connect the cooling unit (130) to the support structure (110).

Abstract: A modular electronic circuit is described wherein mother and daughterboards are arranged in perpendicular planes extending from front to rear within the modules. Ventilation openings in the front and rear faces, and one or more ventilation units mounted to the front and/or rear faces, provide a substantially rectilinear airflow through the module. The absence of transverse vertical barriers to airflow enables a more efficient use of the internal volume of the module for electronic circuitry and reduces fan power requirement and noise generation.

Abstract: There is described a motion control device for preventing free-fall of electronics modules during vertical movement into or out of a supporting structure. The system comprises a rotatable element on the module or structure engageable with surface on the structure or module, respectively, for rolling movement therealong. The rotatable element is provided with a clutch or brake to provide resistance to rotation at least when the module is moving downward relative to the structure. The rotatable element may be a gear engageable with a toothed rack, or a friction roller engageable with a friction surface.

Abstract: A rack mountable system unit includes a housing having first and second sides. First and second elongate plastics slides are secured to respective sides of the system unit. Each plastic slide is dimensioned to slide within a rack mountable rail and is tapered at one end thereof to facilitate insertion into the rail. The tapered end of the slides facilitates insertion into the rails and the use of plastics facilitates sliding. The maximum height of the slide is dimensioned to slide within the rack mountable rail. To further facilitate the sliding of the system unit along the racking, the sides include narrower portions alternating with portions dimensioned to slide within the rack mountable rail. The slides each have a flange and a releasable fixing at a front end thereof for securing the system unit to rack mountable rails.

Abstract: A system unit includes a media drive bay. The media drive bay includes a metal drive bay housing configured to receive a media drive. A connector is provided to interface with a connector on a received media drive. A resilient tongue integral with the media drive bay housing is operable to urge onto a received media drive to hold the media drive in place and to ground a casing of the media drive. A detent is provided for latching a latching member attached to the media drive casing. The media drive can be a commercially available media drive for non-removable use, the media drive being modified by the provision of the latching member to provide for removability.

Abstract: An ejector mechanism (14) for a circuit board (21) and back plane (61), the ejector mechanism being operable to provide resiliently biased engagement between a first part (10) of an electrical connector (8) and a mutually engaging second part (12) of the electrical connector (8), the first and second parts of the electrical connector providing electrical connection for a plurality of electrical channels between the circuit board on which the first part is mounted and the back plane on which the second part is mounted.