The **M2AS1-5121-R** is a specific part number typically associated with high-performance electronic connectors, specifically **M.2 (Next Generation Form Factor / NGFF) sockets**. These are manufactured by companies like LOTES or TE Connectivity and are used primarily for mounting SSDs, Wi-Fi cards, and Bluetooth modules on motherboards. --- ### 1. Key Technical Specifications The following table outlines the general electronic and physical characteristics of this part: | Characteristic | Specification | | :--- | :--- | | **Component Type** | M.2 (NGFF) Connector / Socket | | **Interface Keying** | M Key (typically for NVMe SSDs) | | **Number of Positions** | 67-Pin | | **Pitch** | 0.50 mm | | **Mounting Type** | Surface Mount (SMT) | | **Connector Height** | 2.15 mm to 4.2 mm (depending on specific sub-series) | | **Current Rating** | 0.5A per pin | | **Voltage Rating** | 50V AC/DC | --- ### 2. Physical Design and Pinout The "5121" designation often refers to the specific physical orientation and height of the connector. * **SMD Technology:** The part is designed to be soldered directly onto the surface of a PCB. * **Keying:** The "M Key" configuration (cutout at pins 59-66) allows for PCIe x4 data lanes, which is the standard for high-speed NVMe solid-state drives. * **Gold Plating:** To ensure high-speed signal integrity and prevent corrosion, the contact points are usually plated with gold (Flash or 15u" - 30u"). --- ### 3. Application Use Cases This part is a critical bridge between the main system board and expansion modules: 1. **Storage:** Connecting M.2 NVMe (PCIe) or SATA SSDs. 2. **Connectivity:** Used for M.2 wireless cards (though usually B or E keyed, some universal sockets exist). 3. **Computing Hardware:** Found in laptops, NUCs (Next Unit of Computing), and industrial motherboards where space is a premium. --- ### 4. Part Number Breakdown (General) While numbering varies by manufacturer, the code usually breaks down as follows: * **M2:** Refers to the M.2 standard. * **AS:** Often indicates the mounting style (e.g., Angled/SMT). * **5121:** Dimensional code (Pin count and height). * **R:** Indicates "Reel" packaging (Tape & Reel) for automated assembly.