The **M2AS1-6413-R2** is a specialized backplane or riser module, typically associated with server hardware and industrial computing (often found in AIC or similar storage server chassis). It serves as a bridge for M.2 NVMe storage connectivity. Below is a breakdown of its electronic components and technical characteristics. --- ### 1. General Specifications This part is designed to interface high-speed storage modules with a system's motherboard or controller via a PCIe interface. | Feature | Description | | :--- | :--- | | **Form Factor** | Proprietary Riser / Backplane Card | | **Interface Type** | PCIe (Peripheral Component Interconnect Express) | | **Storage Slots** | Supports M.2 NVMe (usually M-Key) | | **Revision** | R2 (Indicates a specific PCB layout or component update) | --- ### 2. Key Electronic Components The circuitry on the M2AS1-6413-R2 consists of several critical stages to ensure data integrity and power stability: #### A. PCIe Bridge / Redriver ICs Because M.2 NVMe signals operate at very high frequencies (Gen 3 or Gen 4), the board often includes **Redrivers** or **Retimers**. These chips boost the signal strength to ensure data doesn't degrade as it travels from the drive to the CPU. #### B. Power Management (DC-DC Converters) M.2 drives typically require a stable **3.3V** supply. The board includes: * **Voltage Regulators:** To step down or stabilize input power from the main system bus. * **Decoupling Capacitors:** Small ceramic capacitors located near the M.2 slots to filter out electrical noise. #### C. Connectivity & Mechanical Parts * **M.2 Connectors:** High-density 75-position connectors. * **Gold Fingers:** The edge connector that plugs into the motherboard, usually coated in gold to prevent oxidation and ensure low resistance. * **LED Indicators:** SMT (Surface Mount) LEDs that indicate "Power Good" or "Drive Activity." --- ### 3. Functional Architecture The board acts as a **Passive/Active hybrid**. While it doesn't usually perform data processing (like a CPU), it manages the physical routing of PCIe lanes: 1. **Input:** Receives PCIe lanes (e.g., x4 or x8) from the host. 2. **Routing:** Splits or passes through these lanes to the individual M.2 sockets. 3. **Sideband Signals:** Manages SMBus (System Management Bus) signals for drive health monitoring (temperature, SMART data). --- ### 4. Technical Summary Table | Component Category | Function | | :--- | :--- | | **PCB Material** | High-TG FR4 (To handle heat from NVMe drives) | | **Signaling** | Differential pairs for high-speed data transmission | | **Protection** | Over-current protection (Fuses) to prevent drive shorts from damaging the system | | **Compatibility** | Supports 2280 or 22110 M.2 lengths |