Riser Card Expansion via Perpendicular Mounting
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Solution Overview
Problem
The limited space within computer systems, particularly in blade server systems, makes it difficult to add additional add-on units due to the high density of components on the motherboard, such as PCHs, BMCs, and ASICs, which occupy available space, making it challenging to integrate devices like M.2 storage cards.
Innovation Solution
A riser card with a circuit board that includes bus connectors on its sides, allowing for the connection of add-on units perpendicular to the motherboard, utilizing existing space on the bottom of the riser card to accommodate additional units without altering the motherboard arrangement, using connectors like PCIe and M.2 connectors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple add-on units are integrated into the motherboard, then the system functionality is improved, but the available space on the motherboard is reduced due to high component density
Solution Approach 1:
The riser card utilizes the vertical dimension by extending perpendicular to the motherboard plane, allowing add-on units to be mounted in the Z-direction rather than competing for horizontal space on the motherboard. This dimensional transition enables additional functionality without reducing the motherboard's available area.
Solution Approach 2:
The riser card acts as an intermediary component between the motherboard and add-on units. It provides intermediate connection interfaces (PCIe, M.2 connectors) that bridge the motherboard's expansion capabilities to additional functional units, thereby enhancing system versatility without directly modifying the motherboard layout.
2Adaptability or versatility
If M.2 storage cards are added to the system, then storage capabilities are improved, but the required space for the card conflicts with existing component layout
Solution Approach 1:
The M.2 connector on the riser card enables storage cards to be mounted vertically perpendicular to the motherboard, utilizing the vertical space above the motherboard rather than horizontal space that would conflict with existing component layouts. This resolves the space conflict while maintaining enhanced storage capabilities.
3Adaptability or versatility
If the motherboard layout is modified to accommodate additional add-on units, then the system expansion capability is improved, but the complexity of motherboard design and manufacturing increases
Solution Approach 1:
The system is segmented into distinct functional modules: the motherboard provides core functionality, while the riser card serves as a separate expansion module. This segmentation allows expansion capabilities to be added via the removable riser card without modifying the motherboard's design or manufacturing processes, thereby maintaining low complexity in the motherboard while achieving high expansion capability.
Solution Approach 2:
The riser card serves as an intermediary that provides expansion functionality without requiring modifications to the motherboard. By introducing this intermediate component with its own set of connectors and circuitry, the system achieves enhanced expansion capability while the motherboard remains unchanged, avoiding increased design and manufacturing complexity.
Data Source
AI summary
A riser card is disclosed. The riser card includes a circuit board that has two sides, two longitudinal edges extending along a length of the board, and two orthogonal edges extending along a width of the board. The card also includes a first bus connector along one of the longitudinal edges; a second bus connector on one side of the board extending substantially parallel to the longitudinal edges; and a third bus connector on the other side of the board extending substantially parallel to the orthogonal edges. The second bus connector is configured to connect an add-on unit to the card so that the add-on unit extends substantially perpendicular from the board. The third bus connector is configured to connect an add-on unit to the card so that the add-on unit extends substantially parallel to the board and the first edges.