The **M2AS1-5242-R2** is a specialized high-speed interface connector, primarily designed for the **M.2 (Next Generation Form Factor / NGFF)** standard. These components are critical in modern computing for connecting SSDs, Wi-Fi modules, and LTE/5G cards to a motherboard. --- ### 1. Key Technical Specifications Based on the part number conventions for this series (often associated with manufacturers like **UDI** or **Lotes**), here are the core electronic and mechanical characteristics: | Feature | Specification | | :--- | :--- | | **Connector Type** | M.2 (NGFF) Socket | | **Keying** | Key A (Typically for Wireless/Connectivity) | | **Number of Positions** | 67-Pin / 75-Position | | **Pitch** | 0.50 mm | | **Mounting Type** | Surface Mount (SMT) | | **Orientation** | Right Angle / Horizontal | | **Height** | 4.2mm (Nominal Profile) | --- ### 2. Functional Breakdown #### A. Pin Configuration and Pitch The **0.50mm pitch** is a dense arrangement necessitated by the small footprint of M.2 cards. The 67-pin layout supports high-speed differential pairs used for PCIe, USB 3.0, and DisplayPort signals. #### B. The "Key A" Identification The "Key A" physical notch in this part prevents the accidental insertion of incompatible modules. * **Application:** Usually intended for Wi-Fi, Bluetooth, NFC, or WiGig modules. * **Signals:** It typically carries **PCIe x2**, **USB 2.0**, and **I2C** interfaces. #### C. Termination and Mounting * **SMT (Surface Mount Technology):** The "R2" suffix often refers to the reel packaging and specific mounting bosses. It is soldered directly onto the PCB surface. * **Gold Plating:** The contact areas are usually plated with gold (e.g., 3µ" to 15µ") to ensure low contact resistance and prevent oxidation over thousands of mating cycles. --- ### 3. Electrical Performance Limits | Parameter | Typical Value | | :--- | :--- | | **Current Rating** | 0.5A per pin | | **Voltage Rating** | 50V AC/DC | | **Dielectric Withstanding** | 300V AC | | **Operating Temperature** | -40°C to +85°C | --- ### 4. Integration Example (Code Concept) While the connector is hardware, it interfaces with the OS via the PCIe bus. In a Linux environment, a device plugged into this connector would be identified via `lspci`: ```bash # Check for devices connected to the M.2 (Key A) slot lspci -nn | grep -i "Network controller" ```