Based on the part number **M2AS1-5343-R/N**, this component belongs to a series of **RJ45 Integrated Connector Modules (ICMs)**, typically manufactured by companies like MagJack (CUI Devices, Bel, or similar magnetic component specialists). These parts are essentially Ethernet jacks with built-in "magnetics" (transformers and filters). --- ## Technical Specifications & Features The following table outlines the typical electrical and physical characteristics for this specific series: | Parameter | Specification | | :--- | :--- | | **Component Type** | RJ45 Magnetic Jack (ICM) | | **Ethernet Speed** | 10/100/1000 Base-T (Gigabit Ethernet) | | **Port Configuration** | Single Port (1x1), Right Angle | | **Shielding** | Metal Shielded (EMI Protection) | | **LED Indicators** | Integrated (Commonly Green/Yellow) | | **Mounting Type** | Through-hole (Solder) | | **Isolation Voltage** | 1500 Vrms | --- ## Internal Electronic Composition The "Magnetic" aspect of this part means it contains several internal passive components required for Ethernet communication: ### 1. Isolation Transformers The core of the part consists of tiny toroidal transformers. These provide **galvanic isolation** between the high-speed Ethernet cable and the sensitive PHY (Physical Layer) chip on the PCB. This protects the hardware from static discharges and ground loops. ### 2. Common Mode Chokes These are used to suppress **Electromagnetic Interference (EMI)**. They filter out high-frequency noise that could radiate from the Ethernet cable or interfere with the signal integrity of the data transmission. ### 3. Termination Resistors (Bob Smith Termination) Inside the jack, there are often 75-ohm resistors and a high-voltage capacitor. This circuit helps match the impedance of the unused wire pairs and reduces common-mode emissions. ### 4. Integrated LEDs The "R/N" suffix often indicates specific LED configurations. - **Green:** Typically indicates Link status. - **Yellow/Amber:** Typically indicates Activity (Data transfer). --- ## Pinout and Connectivity The device typically features two sets of pins: 1. **Signal Pins (8-10 pins):** Connected to the Ethernet PHY chip on your motherboard or controller. 2. **LED Pins (4 pins):** Connected to the GPIOs of your controller to drive the status lights. 3. **Shield Tabs:** Connected to the Chassis Ground to provide a path for EMI/ESD. ---