The **M2PP-94R-R2/Q** is a specialized industrial-grade power supply component, typically identified as a **Hot-Swap Redundant Power Module** designed for servers, networking equipment, and high-availability storage arrays. Below is a breakdown of its technical specifications and electronic characteristics. --- ### 1. General Specifications This module is engineered for high efficiency and reliability in mission-critical environments. | Feature | Specification | | :--- | :--- | | **Form Factor** | Slim-line / 1U Redundant | | **Max Power Output** | 400W to 500W (model variant dependent) | | **Input Type** | AC Universal (90V - 264V) | | **Frequency** | 47Hz - 63Hz | | **Hot-Swappable** | Yes (Supports N+1 redundancy) | --- ### 2. Key Electronic Features #### A. Power Factor Correction (PFC) The unit features **Active PFC**, which ensures the power supply operates at a high efficiency (typically >0.95 at full load). This reduces harmonic distortion and improves energy utilization from the AC grid. #### B. Protection Circuitry To protect the connected motherboard and internal components, the module includes several hardware-level safety layers: * **OVP (Over Voltage Protection):** Shuts down the unit if the output voltage exceeds safety thresholds. * **OCP (Over Current Protection):** Limits current to prevent circuit traces from melting. * **SCP (Short Circuit Protection):** Immediately cuts power if a direct short is detected. * **OTP (Over Temperature Protection):** Thermal sensors trigger a shutdown if internal cooling fails. #### C. Connectivity and Output Rails The module communicates with the system backplane via a specialized **Gold-Finger edge connector**. | Rail | Typical Voltage | Purpose | | :--- | :--- | :--- | | **+12V** | Main Output | Powers CPUs, GPUs, and Fans | | **+5V / +3.3V** | Minor Rails | Logic circuits and SSDs (often regulated on the backplane) | | **+5Vsb** | Standby | Keeps the Baseboard Management Controller (BMC) active | --- ### 3. Management and Monitoring The "Q" or "R2" suffix often denotes specific revisions related to the **PMBus (Power Management Bus)** protocol. * **I2C Communication:** Allows the system BIOS or OS to monitor real-time metrics. * **Metrics Tracked:** Internal temperature, fan RPM, current draw, and total uptime. * **Status LED:** Usually features a Bi-color LED (Green for OK, Amber/Red for Failure/Warning). --- ### 4. Cooling System The module contains an internal high-static pressure **40mm cooling fan**. The fan speed is dynamically controlled based on the internal thermistors to balance noise levels with component longevity.