The **M2XUM-R2V1-P** is a specific hardware revision for an industrial or embedded motherboard/carrier board, often associated with Advantech or similar industrial computing manufacturers. It typically serves as a high-performance interface for M.2 modules, specifically designed for AI acceleration or high-speed NVMe storage. --- ### Core Specifications and Components | Feature | Description | | :--- | :--- | | **Form Factor** | M.2 2280 (M-Key) | | **Interface** | PCIe x4 (Gen 3 or Gen 4 depending on host) | | **Primary Chipset** | Often features an Intel® Movidius™ Myriad™ X VPU or a Marvell/Silicon Motion controller | | **Connectivity** | M.2 M-Key edge connector | | **Thermal Solution** | Usually includes a dedicated heatsink or thermal pad interface | ### Detailed Electronic Parts Breakdown #### 1. Power Management Integrated Circuits (PMIC) To convert the 3.3V supplied by the M.2 slot into the various low voltages required by the onboard processors (e.g., 0.9V for core logic, 1.8V for I/O), the board uses high-efficiency buck regulators. #### 2. Storage/Processing Logic * **VPU/NPU:** If configured for AI, it contains Vision Processing Units capable of hardware acceleration for deep learning. * **Flash Memory:** NAND chips for local data caching or firmware storage. * **DRAM:** High-speed LPDDR4 memory is often integrated to handle high bandwidth for inference or data buffering. #### 3. Passive Components * **MLCC Capacitors:** Used for decoupling and filtering noise from the high-speed data lines. * **SMD Inductors:** Part of the DC-DC conversion circuits for stable power delivery. * **Resistor Networks:** Used for impedance matching on the differential PCIe pairs to ensure signal integrity. #### 4. Signal Integrity Components * **Clock Generator:** A precision crystal oscillator provides the reference clock for the PCIe interface. * **EEPROM:** Stores the board's identity (Subsystem ID) and configuration parameters for BIOS/UEFI recognition. --- ### Pinout Configuration (M.2 M-Key) ```text Pins 1-11: Ground and 3.3V Power Pins 12-19: Reserved / Config Pins Pins 21-33: PCIe Lane 3 (Tx/Rx) Pins 35-47: PCIe Lane 2 (Tx/Rx) Pins 49-61: PCIe Lane 1 (Tx/Rx) Pins 63-75: PCIe Lane 0 (Tx/Rx) ``` ### Safety and Protection The board includes **TVS (Transient Voltage Suppression) diodes** near the connector to protect the sensitive CMOS logic from Electrostatic Discharge (ESD) during installation.