General
Number of ports	5
Max. PoE power per port	36 W
Packet buffer	1 Mbit
Air humidity	5–95 % (nicht kondensierend)
Safety standards	UL 508, EN 62368-1
Auto MDI/MDI-X

The EDS-G205A-4PoE-1GSFP-T from Moxa is an industrial Gigabit Ethernet switch with five RJ45 ports, four of which are PoE+-capable. The device provides central power supply for network end devices via the Ethernet cable, eliminating the need for separate power lines. It is designed for use in industrial environments where high reliability and robust operating conditions are required. The PoE technology according to IEEE 802.3af/at enables a maximum power consumption of 36 W per port, which is sufficient for power-hungry devices such as IP cameras, wireless access points, or VoIP phones.

Applications
This switch is suitable for industrial networks, particularly in production facilities, transportation technology, or monitoring systems, where decentralized power supply for end devices is required. The wide operating temperature range of -40 to 75 °C (model -T) makes it suitable for extreme environments, such as outdoor use or in vehicles. The robust construction and certification according to EN 50121-4 for use in the railway industry highlight its suitability for demanding applications.

Functions and Equipment in Detail
The switch features five 10/100/1000BaseT(X) RJ45 ports that automatically detect transmission speed and switch between Full- and Half-Duplex modes. The Auto MDI/MDI-X function allows direct connection to other devices without additional crossover cables. The four PoE ports support pin assignment Mode A (Endspan) with V+, V+, V-, V- on pins 1, 2, 3, 6. Intelligent power consumption detection automatically classifies connected devices and supplies the required power. Protection features such as overcurrent and short-circuit protection increase network safety.

Technology Explained Simply
The Store-and-Forward processing method ensures that entire data packets are received, checked, and then forwarded, enhancing network security. The MAC table with 8,000 entries enables efficient packet forwarding. Support for Jumbo Frames up to 9.6 KB reduces the number of packets during large data transfers and improves network efficiency. The redundant power supply with input voltages of 12/24/48 VDC ensures continuous operation even during voltage fluctuations.

Compatibility and Accessories
The switch is compatible with all devices supporting PoE or PoE+ standards IEEE 802.3af/at. The use of end devices such as IP cameras, access points, or VoIP phones is directly possible, provided the power requirements are within the 36 W per port limit. Certifications according to UL 508, EN 62368-1, EN 61000-6-2/-6-4, CISPR 32, FCC Part 15B Class A, and IEC 61000-4-2/3/4/5/6/8 as well as IEC 60068-2 guarantee compliance with international safety and EMC standards.

Mounting and Installation
The switch is designed for industrial environments and can be mounted in standard 19-inch racks. Installation is done via the RJ45 connectors, with the PoE function automatically activated when a compatible device is connected. The Plug-and-Play functionality requires no manual configuration, as it is an unmanaged switch.

Advantages in Operation
Central power supply via the network cable simplifies end device installation and reduces the number of cables. The high operating temperature range of -40 to 75 °C enables use in harsh environments. The redundant power supply and integrated protection functions increase network availability and safety. The 5-year manufacturer warranty underscores the reliability of the device.