The **M2CEC-2600D-R2** is a specialized industrial-grade expansion card, typically used in embedded computing and networking environments. It is part of the **M.2 to Dual Gigabit Ethernet** family of modules, designed to add high-speed connectivity to systems with limited space. --- ### ## Technical Specifications The core electronic components and capabilities of the M2CEC-2600D-R2 are summarized in the table below: | Component / Feature | Specification | | :--- | :--- | | **Form Factor** | M.2 Key B+M (2242 or 2280 usually) | | **Controller IC** | Intel® I210-IT or I211-AT (Dual Chipset) | | **Interface** | PCIe 2.1 (x1) | | **Port Configuration** | Dual RJ45 Gigabit Ethernet | | **Speed Support** | 10/100/1000 Mbps per port | | **Power Consumption** | Approximately 1.2W to 1.5W | | **Operating Temp** | -40°C to 85°C (Industrial Grade) | --- ### ### Key Electronic Components 1. **Ethernet Controller (Intel I210/I211):** This is the "brain" of the module. These chips handle the Media Access Control (MAC) and Physical Layer (PHY) functions. They are preferred in industrial settings because they support hardware-based **IEEE 1588 Precision Time Protocol (PTP)**, which is critical for synchronized industrial automation. 2. **Magnetic Isolation Transformers:** Near the RJ45 connectors (or on the daughterboard), you will find small black blocks. These provide galvanic isolation, protecting the main system from power surges or static electricity coming from the network cables. 3. **Voltage Regulators:** The card converts the 3.3V supplied by the M.2 slot into the specific voltages required by the Intel controllers (often 1.0V or 1.9V) using high-efficiency buck converters or LDOs. 4. **PCIe Bridge:** Since the module provides two Ethernet ports over a single M.2 slot, it utilizes a PCIe switch or takes advantage of the dual-channel capabilities if the host supports it, ensuring that both ports can operate at full duplex without bottlenecks. --- ### ### Connectivity Layout The M2CEC series usually follows a modular design: * **The Main M.2 Module:** Plugs into the motherboard. * **The Daughterboard:** Contains the physical RJ45 ports. * **FPC/FFC Cable:** A high-speed flexible flat cable that connects the M.2 module to the RJ45 ports, allowing for flexible mounting in tight chassis. ---