D-Link DEM-311GT 1-Port SFP SX MM Fiber Transceiver – Up to 550

The D-Link DEM-311GT is a Gigabit Ethernet SFP (Small Form-factor Pluggable) fiber transceiver designed to provide 1000BASE-SX connectivity over multimode fiber. Supporting fiber transmission distances of up to 550 metres, it provides a reliable solution for extending Gigabit Ethernet connections between compatible network switches, servers, routers, and other SFP-equipped networking devices. The DEM-311GT operates at an 850 nm wavelength and uses a duplex LC connector, making it suitable for short- to medium-distance fiber uplinks in offices, server rooms, data centres, campuses, and structured network installations.

Product Features

1000BASE-SX Gigabit Ethernet

The DEM-311GT supports the 1000BASE-SX Gigabit Ethernet standard, providing high-speed fiber connectivity for compatible network equipment equipped with SFP slots.

Multimode Fiber Support

The transceiver is designed for multimode fiber (MMF), making it suitable for shorter-distance fiber network links within buildings, campuses, server rooms, and data centres.

Up to 550 Metres Transmission Distance

The DEM-311GT supports fiber transmission distances of up to 550 metres, depending on the multimode fiber type and network installation conditions. This makes it suitable for connecting network equipment across floors, buildings, or other locations within a site.

850 nm Wavelength

The transceiver operates at an 850 nm optical wavelength, which is commonly used for 1000BASE-SX multimode fiber Ethernet connections.

Duplex LC Connector

The DEM-311GT uses a duplex LC fiber connector, providing dedicated transmit and receive paths for the fiber link.

Gigabit Data Transmission

The transceiver provides Gigabit Ethernet connectivity with a data rate of up to 1.25 Gbps, making it suitable for high-speed network uplinks and backbone connections.

Full-Duplex Operation

The DEM-311GT supports full-duplex operation, allowing data to be transmitted and received simultaneously over the fiber connection.

Hot-Pluggable SFP Design

The SFP form factor allows the transceiver to be installed directly into compatible SFP slots. Its hot-pluggable design simplifies installation, replacement, and network maintenance.

MSA-Compliant Design

The DEM-311GT is designed according to industry-standard SFP specifications, supporting compatibility with suitable SFP-equipped network devices. Compatibility with the specific switch or network device should be confirmed before deployment.

Suitable for Fiber Network Expansion

The transceiver provides a convenient way to add multimode fiber connectivity to compatible network equipment, making it useful for network expansion and fiber uplink deployments.

Product Specifications

• Brand: D-Link
• Model: DEM-311GT
• Product Type: Gigabit SFP Fiber Transceiver
• Form Factor: SFP / Mini-GBIC
• Fiber Standard: 1000BASE-SX
• Fiber Type: Multimode Fiber (MMF)
• Wavelength: 850 nm
• Maximum Transmission Distance: Up to 550 metres
• Connector Type: Duplex LC
• Data Rate: 1.25 Gbps
• Ethernet Speed: Gigabit Ethernet
• Operation: Full duplex
• Installation: Hot-pluggable
• Application: Gigabit Ethernet over multimode fiber