The **M2AMS2-3C-R2** is a specific part number typically associated with high-performance **M.2 (NGFF) SSD to PCIe interface adapters** or specialized connector assemblies used in industrial and computing hardware. Below is a breakdown of the electronic components and technical characteristics typically found in this module. --- ### 1. Technical Specifications This component serves as a bridge between high-speed storage modules and the host motherboard. | Feature | Specification | | :--- | :--- | | **Interface Type** | M.2 (Key M) to PCIe x4 | | **Form Factor** | Low Profile / Standard M.2 2280/22110 | | **Data Rate** | Supports PCIe Gen 3.0 / Gen 4.0 (Backwards compatible) | | **Power Input** | 3.3V (via PCIe slot) | | **Signaling** | Differential signaling for high-speed data integrity | --- ### 2. Key Electronic Parts & Components The PCB (Printed Circuit Board) of the M2AMS2-3C-R2 consists of several critical sub-components: #### A. Power Management Integrated Circuits (PMIC) Since M.2 NVMe drives can draw significant power during peak write operations, the adapter includes: * **Voltage Regulators (LDO/Buck):** Converts the 12V or 5V from the PCIe slot down to a stable **3.3V** required by the SSD. * **Decoupling Capacitors:** Small ceramic capacitors (MLCC) placed near the connector to filter high-frequency noise and prevent voltage drops. #### B. Signal Integrity Components * **Coupling Capacitors:** These are placed in series with the high-speed PCIe lanes to block DC bias while allowing AC data signals to pass. * **Impedance Matched Traces:** The copper traces on the PCB are designed with specific geometry to maintain a **85-100 ohm differential impedance**, preventing signal reflections. #### C. Physical Connector (M-Key) * **Gold-Plated Contacts:** The 75-pin M.2 connector uses gold plating to ensure low contact resistance and prevent oxidation over long-term use. #### D. Thermal Management * **Thermal Vias:** Small copper-lined holes in the PCB that help conduct heat away from the controller of the mounted SSD to the larger ground planes of the adapter. --- ### 3. Pinout Logic The M2AMS2-3C-R2 follows the standard M.2 Key M pinout logic: | Pins | Function | | :--- | :--- | | **1-11** | Ground and 3.3V Power | | **12-19** | PCIe Lane 3 (Transmit/Receive) | | **20-31** | PCIe Lane 2 (Transmit/Receive) | | **32-43** | PCIe Lane 1 (Transmit/Receive) | | **44-55** | PCIe Lane 0 (Transmit/Receive) | | **59-75** | Reference Clock and Logic Signals | ---