General
Number of RJ45 ports	8
Auto-negotiation
Auto MDI/MDI-X
Full-/Half-Duplex

The Moxa EDS-208A is an unmanaged Industrial Ethernet-switch with up to 8 RJ45 ports, specifically developed for use in harsh industrial environments. The device offers a robust network connection with support for 10/100BaseT(X) over copper cables and optional fiber optic connections in multimode or singlemode format with SC or ST connectors. The model variants differ in the number of fiber optic ports (1 or 2) and the number of RJ45 ports (8 for pure copper models, 6 or 7 for models with fiber optic ports). The fiber optic standard support is based on 100BaseFX, enabling a data transfer rate of 100 Mbit/s. The Ethernet standard support includes 10/100BaseT(X), allowing connection with various network devices. The Auto-Negotiation function enables automatic adjustment of the transmission rate and duplex mode, while Auto MDI/MDI-X allows direct connection between switch and device without a crossover cable. Support for Full- and Half-Duplex operation ensures flexibility in various network environments. An integrated DIP switch enables activation of Broadcast Storm Protection to prevent uncontrolled data transmission and enhance network security.

Applications include industrial automation, transportation applications, marine systems, and hazardous areas. Certifications include CE, FCC, UL, Class I Div. 2, ATEX Zone 2, EN 50121-4, NEMA TS2, DNV, LR, ABS, and NK, confirming suitability for demanding environments. The protection rating IP30 protects against solid foreign objects larger than 2.5 mm and splashing water, but not against direct water jets or immersion. The aluminum housing provides mechanical stability and heat dissipation. Mounting is done on a DIN rail, enabling flexible installation in enclosures.

Power supply is provided via dual redundant inputs supporting voltages of 12/24/48 VDC, with a voltage range from 9.6 to 60 VDC. This redundant supply increases system availability, as in the event of failure of one input, the other continues to supply power. The temperature ranges vary by model: standard models operate from -10 to 60 °C, while the -T variants support an extended range of -40 to 75 °C, making them suitable for extreme environments. Each device undergoes a 100 % burn-in test to ensure quality and reliability.

Compatibility and accessories include use with various fiber optic and copper cables that comply with respective standards. Fiber optic models are designed for multimode and singlemode connections with SC or ST connectors. Combination with other Moxa network devices or standard IT network components is possible as long as physical and logical standards match. The certifications enable use in various industries, including energy, transportation, and marine industries.

Mounting and installation are done on a DIN rail, allowing quick and secure fixation in enclosures or control cabinets. The redundant power supply requires two separate power sources, each connected via one of the two inputs. Configuration is done via the DIP switch to activate Broadcast Storm Protection, requiring no additional software or network administration. The operating voltage of 12/24/48 VDC is typical for industrial facilities, making integration into existing power supply systems straightforward.

Operational advantages include high reliability, easy installation, and low maintenance. The redundant power supply and burn-in test increase system availability. Support for Auto-Negotiation and Auto MDI/MDI-X reduces network configuration complexity. The extended temperature ranges of the -T models allow use in extreme environments without requiring additional cooling or heating systems. Certifications for hazardous areas expand application scope in safety-critical applications.