The **M2AS1-5234-R2** is a specialized electronic component, typically identified as an **AC-DC Power Supply Module** or a **Server Power Module**, often associated with networking hardware and server chassis (such as those from Advantech or similar industrial computing brands). Below is a detailed breakdown of its electronic characteristics and specifications. --- ### 1. General Specifications This unit is designed for high-availability environments where redundant power is critical. | Feature | Specification (Typical) | | :--- | :--- | | **Component Type** | Redundant Power Supply Unit (PSU) | | **Form Factor** | 1U / M2AS Series | | **Total Wattage** | 300W - 400W (depending on specific revision) | | **Input Voltage** | 90 ~ 264 VAC (Universal Input) | | **Input Frequency** | 47 ~ 63 Hz | | **Efficiency** | 80 Plus (Standard or Bronze level) | --- ### 2. Output Rail Distribution The "5234" naming convention often refers to the internal voltage rail configuration. The module converts AC input into multiple DC rails to power motherboards and peripherals. | Rail | Voltage | Function | | :--- | :--- | :--- | | **+3.3V** | 3.3V DC | Powers logic circuits and low-voltage ICs | | **+5V** | 5.0V DC | Powers USB ports and older logic components | | **+12V** | 12.0V DC | Primary rail for CPUs, GPUs, and Hard Drives | | **+5Vsb** | 5.0V DC | Standby power for remote wake-up and BMC | --- ### 3. Key Electronic Features * **Active PFC (Power Factor Correction):** Includes internal circuitry to ensure the power factor is >0.9, reducing electrical waste and heat. * **Redundancy Support:** Features a "hot-swap" connector. It is designed to work in a 1+1 configuration, meaning if one module fails, the other takes over without system downtime. * **Protection Circuitry:** * **OVP:** Over Voltage Protection. * **OCP:** Over Current Protection. * **SCP:** Short Circuit Protection. * **Cooling:** Includes an integrated high-RPM cooling fan (usually 40mm) controlled by an internal thermal sensor. --- ### 4. Typical Applications The M2AS1-5234-R2 is commonly found in: 1. **Industrial Rackmount Servers:** 1U or 2U chassis. 2. **Storage Arrays:** High-density NAS or SAN units. 3. **Communication Hubs:** Telecommunication switching gear. --- ### 5. Pinout and Interface The module uses a **Gold Finger** (PCB edge connector) rather than standard ATX cables. This interface carries: * Main DC power outputs. * **PS-ON Signal:** Allows the motherboard to trigger the power supply. * **I2C / SMBus:** For digital communication (monitoring fan speed, temperature, and load).