Available. The Mitsubishi QJ71E71-100 is an Ethernet module designed for the MELSEC-Q Series programmable controllers, enabling seamless integration into industrial automation networks. This module supports both 10BASE-T and 100BASE-TX Ethernet standards, offering data transmission speeds of 10 Mbps and 100 Mbps, respectively. It features a fixed RJ45 connector configured to MDI, ensuring reliable connectivity. The module operates with a baseband transmission method and supports a maximum segment length of 100 meters between the hub and node. It allows for up to 16 simultaneous open connections, with a fixed buffer of 1K words × 16 and a random access buffer of 6K words × 1. Additionally, the module can handle email functionalities, including attachments and main text, with storage capacities of 6K words × 1 and 960 words × 1, respectively. The QJ71E71-100 occupies 32 I/O points and has an internal current consumption of 0.50 A at 5 V DC. Its compact dimensions are 98 mm in height, 27.4 mm in width, and 90 mm in depth, with a weight of 0.11 kg. This module is ideal for applications requiring robust and efficient Ethernet communication within the MELSEC-Q Series PLC systems.