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Browse Prior Art Database

Mechanical Architecture Of Creating A Simplified Riser Card Mounting In A Network Computer

IP.com Disclosure Number: IPCOM000014801D
Original Publication Date: 1999-Nov-01
Included in the Prior Art Database: 2003-Jun-20
Document File: 1 page(s) / 29K

Publishing Venue

IBM

Related People

Brian Kerrigan: AUTHOR [+3]

Abstract

Mechanical Architecture Of Creating A Simplified Riser Card Mounting In A Network Computer The present disclosure describes a technique of mechanically supporting expansion cards (typically feature cards) by utilizing a unique riser card support method. The described embodiment is typically associated with thin client or network computer designs but could be implemented in any small chassis computer system unit. In typical legacy configurations the motherboard (or printed circuit board) is usually mounted and attached into the chassis on the bottom side and the riser card support for holding and connecting feature card expansions is suspended toward the top side of the motherboard. The associated schematic drawing depicts a unique approach wherein the motherboard (10) is mounted using the top side surface (10a) allowing the riser card (11) to be "captured" and held in place between the motherboard (10) and the metal support fingers (12) formed from an adjacent chassis wall (13).

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This is the abbreviated version, containing approximately 90% of the total text.

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Mechanical Architecture Of Creating A Simplified Riser Card Mounting In A

Network Computer

The present disclosure describes a technique of mechanically supporting
expansion cards (typically feature cards) by utilizing a unique riser card
support method. The described embodiment is typically associated with thin
client or network computer designs but could be implemented in any small
chassis computer system unit.

      In typical legacy configurations the motherboard (or printed circuit
board) is usually mounted and attached into the chassis on the bottom side and
the riser card support for holding and connecting feature card expansions is
suspended toward the top side of the motherboard. The associated schematic
drawing depicts a unique approach wherein the motherboard (10) is mounted
using the top side surface (10a) allowing the riser card (11) to be "captured"
and held in place between the motherboard (10) and the metal support fingers
(12) formed from an adjacent chassis wall (13).

      In the embodiment shown, the two simple fingers (12), which are formed
from the surrounding chassis metal (13), hold the riser card (11). The
simpler structure replaces the riser bracket, the welded metal strut brace,
and all mounting screws typical in legacy designs. In addition, the top
surface mounting of the motherboard in the chassis provides a "top side
feature referencing" datum for alignment of other system features (typically
connectors, power LEDs, switches, PCMCIA connectors, light pipes, etc.)...