The **M2SBS-B1D-R2** is a specific model within a series of industrial-grade **M.2 to SATA/mSATA Bridge Boards** or high-performance solid-state storage adapters. These parts are typically used in embedded computing, industrial automation, and networking hardware. --- ### 1. Component Overview The device functions as a hardware bridge, allowing an M.2 (NGFF) storage module to communicate with a standard SATA host interface. This is critical for systems that have SATA connectors but require the compact form factor of M.2 drives. ### 2. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Interface (Host)** | 7+15 Pin SATA (Standard SATA Data + Power) | | **Interface (Device)** | M.2 (NGFF) B-Key or B+M Key | | **Form Factor Support** | 2230, 2242, 2260, 2280 | | **Bus Type** | SATA III (6Gbps) - *Note: Does not support NVMe/PCIe* | | **Voltage Input** | 3.3V (Regulated from 5V SATA input) | | **Operating Temp** | -40°C to +85°C (Industrial Grade) | --- ### 3. Electronic Architecture The board consists of several critical electronic sub-systems to ensure data integrity and power stability: #### A. Power Management IC (PMIC) Since SATA power provides 5V/12V and M.2 modules require **3.3V**, the board features a Step-Down (Buck) Voltage Regulator. * **Filtering:** Includes decoupling capacitors to minimize ripple noise that could affect SSD performance. * **Protection:** Often includes OCP (Over-Current Protection) and TVS diodes for ESD protection. #### B. Signal Integrity The PCB layout utilizes differential pair routing for the SATA data lines. * **Impedance Matching:** Designed for 100-ohm differential impedance. * **Coupling Capacitors:** Small surface-mount capacitors are placed on the TX/RX lines to block DC bias while allowing high-speed AC data signals to pass. #### C. Connector Pinout (M.2 B-Key) | Pin Range | Function | | :--- | :--- | | **1-11** | Ground and Power (3.3V) | | **12-19** | Not Used (Reserved for USB/PCIe in other M.2 types) | | **41-49** | SATA Transmit/Receive Differential Pairs | | **70-75** | 3.3V Power | --- ### 4. Important Usage Note **Compatibility Warning:** The M2SBS-B1D-R2 is designed for **SATA-protocol M.2 SSDs**. It will physicaly fit, but will **not** function with NVMe (M-Key) SSDs. Always verify that the SSD has a "B" or "B+M" key notch. ---