Reversible Riser Card Layout for Multi-Orientation Expansion Cards

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Solution Overview

Problem

Information processing devices often lack sufficient or conveniently located connectors for expansion cards, requiring multiple types of riser cards that are cumbersome to manage and costly to maintain, with existing riser cards not accommodating different expansion card orientations or needing multiple SKUs.

Innovation Solution

A direction changeable riser card that can be reconfigured into multiple orientations to compatibly mate with both the primary system board and multiple expansion cards, featuring multiple riser connectors for flexible installation and reduced inventory needs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple types of riser cards are used to accommodate different expansion card requirements, then connector compatibility and location flexibility are improved, but device complexity and inventory management burden increase

Engineering Contradiction:

Improveconnector compatibilityVSAvoidinventory management

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The riser card is designed with multiple riser connectors (first, second, and third riser connectors) that can accommodate different expansion card types and orientations. The circuit board includes mounting features that allow the same riser card to be installed in multiple orientations (first and second mounting orientations), enabling a single universal riser card to replace multiple specialized ones, thereby reducing inventory complexity while maintaining connector compatibility

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Ease of manufacture

If riser cards are designed with fixed orientation, then manufacturing and assembly are simplified, but flexibility in accommodating different expansion card orientations is reduced

Engineering Contradiction:

Improveassembly simplicityVSAvoidorientation flexibility

Core Design Contradiction:

Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The riser card is designed with symmetric mounting features and multiple riser connectors positioned at different locations on the circuit board, allowing it to be dynamically installed in multiple orientations. The first and second riser connectors can be positioned at opposite edges or adjacent edges, and the card can be mounted in first or second mounting orientations depending on the expansion card requirements, providing orientation flexibility without complicating manufacturing

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The circuit board is segmented with multiple independently positioned riser connectors (first, second, and third riser connectors) that can be selectively used based on orientation. This segmentation allows the same riser card structure to serve multiple orientation configurations, maintaining manufacturing simplicity while achieving orientation flexibility

Inventive Principle:

Principle #1Segmentation

3Adaptability or versatility

If connectors are placed in inconvenient locations on the primary system board, then system board design flexibility is improved, but ease of operation and cable management deteriorate

Engineering Contradiction:

Improvesystem board design flexibilityVSAvoidcable management

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The riser card acts as an intermediary between the primary system board and expansion cards. It provides additional riser connectors at strategically positioned locations that improve cable management and accessibility. The riser card receives signals from the system board through the first riser connector and provides additional connection points through second and third riser connectors, mediating the connection to make cable management easier while preserving system board design flexibility

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12602094B2Direction changeable riser card for an information processing device

Publication Date: 2026.04.14 HEWLETT PACKARD ENTERPRISE DEV LP

AI summary

A direction changeable riser card includes a circuit board and first, second, third, and fourth riser connectors. The first connector is positioned at a first edge and the second connector is positioned at a second edge of the circuit board, the third connector is positioned at the second edge and adjacent to the second connector, and the fourth connector is mounted to a face of the circuit board and electrically connected to the first, second, and third connectors, and configured to mate with an expansion connector of an expansion card. The riser card is configured to be interchangeably mountable on a system board in a first mounting orientation associated with the face of the circuit board facing along a first direction, and in a second mounting orientation associated with the face of the circuit board facing along a second direction, with the circuit board being perpendicular to the system board.