General
Packet buffer	512 kbit

The EOM-104 from Moxa is a compact, embedded managed Ethernet switch module with four ports, specifically designed for device manufacturers who wish to add reliable network connectivity and management functions to their products. The module is particularly suitable for space-constrained industrial embedded applications, as it occupies only two-thirds the size of a business card and features low power consumption. It enables direct integration into OEM devices and provides a robust network infrastructure for connected systems.

Applications
This module is designed for use in industrial environments where compact size and high reliability are required. It is used in devices that require Ethernet connectivity, such as control systems, machine controls, monitoring units, or other networked industrial devices. The ability to support both copper and fiber optic connections expands its application possibilities in various network environments.

Functions and Features in Detail
The EOM-104 supports various Ethernet standard protocols, including IEEE 802.3 (10BaseT), IEEE 802.3u (100BaseT(X) and 100BaseFX), as well as IEEE 802.3x for Flow Control. For data traffic prioritization, IEEE 802.1p (Quality of Service) is supported. Network redundancy is ensured by Turbo Ring (recovery < 20 ms) as well as STP and RSTP protocols, enabling fast recovery in case of network failures. Software functions include support for BOOTP, DHCP Client, HTTP, RARP, RMON, SMTP, SNMPv1/v2c/v3, Syslog, Telnet, and TFTP. MIB support includes Bridge MIB, Ethernet-like MIB, MIB-II, P-BRIDGE MIB, RMON MIB Groups 1, 2, 3, 9, and RSTP MIB.

Technology Explained Simply
The switch’s MAC table has 1,024 entries, enabling efficient management of network devices. The packet buffer with 512 kbit ensures stable data transmission, even under high loads. The GPIO and Turbo Ring Enable pins expand integration possibilities with existing hardware and allow flexible control of the module. Alarm notifications via SNMP and email support network monitoring and enable early response to disruptions.

Compatibility and Accessories
The module is designed for integration into OEM devices and supports both 10/100BaseT(X) copper connections and 100BaseFX fiber optic connections. It is therefore compatible with a wide range of network devices and topologies. Support for protocols such as SNMP, Telnet, and HTTP enables easy configuration and monitoring using network management tools.

Mounting and Installation
Mounting is done directly into the target hardware, with the compact design and low height of the module enabling integration into space-limited systems. The expansion interfaces (GPIO, Turbo Ring Enable) facilitate connection to existing control systems. The operating temperature range of -40 to 75 °C makes the module suitable for use in industrial environments with varying temperatures.

Operational Advantages
The combination of compact design, low power consumption, and comprehensive network functions makes the EOM-104 an efficient solution for networked industrial systems. Fast recovery from network failures via Turbo Ring and support for QoS ensure stable and reliable data transmission. Integrated network monitoring via SNMP and email enables proactive maintenance and reduces downtime.

Protection Rating, Operating Voltage, Power Consumption
The operating temperature is specified as -40 to 75 °C. The size is described as two-thirds of a business card, indicating a compact form factor.