Brother Printers
WhiteBoard
IP PBXs
D-Link DEM-311GT 1-port SFP SX MM Fiber Transceiver
Key Features
Brand: D-Link
1000BASE-SX with 550m range
Duplex LC connector
Hot-pluggable functionality
Metal housing for low EMI
IEEE 802.3z and RoHS compliant
1 Year Warranty
D-Link DEM-311GT 1-Port SFP SX MM Fiber Transceiver: High-Performance Short-Range Gigabit Expansion
Standard copper networking lines hit a strict performance barrier past 100 meters, leading to packet drops and latency in dense corporate environments. The D-Link DEM-311GT 1-Port SFP SX MM Fiber Transceiver provides an industrial-grade, small form-factor pluggable (SFP) optical module engineered explicitly to resolve short-range backbone limits. By translating electrical network data into high-speed 1000BASE-SX optical signals, this compact transceiver delivers reliable, low-latency Gigabit transmission across localized business infrastructures.
Why Choose the D-Link DEM-311GT SFP Transceiver
The D-Link DEM-311GT is optimized for localized multi-mode fiber networks where structural reliability, cross-brand compatibility, and wire-speed performance are vital for continuous operation.
Blazing-Fast Gigabit Fiber Connectivity
The transceiver module slots directly into open SFP uplink ports on active switches, routers, and firewalls to provide full 1000Mbps Gigabit throughput. Running in full-duplex operation, it delivers a high-capacity transmission pipeline optimized for demanding enterprise workloads—such as centralized server data synchronization, local network storage (NAS) access, and high-speed core switch links.
Highly Efficient Multi-Mode Coverage
Unlike long-range single-mode modules designed for kilometers of open space, the DEM-311GT utilizes an optimal 850nm optical wavelength tuned precisely for multi-mode fiber optic (MMF) cables. It safely drives stable, high-bandwidth data pipelines over traditional 50/125µm or 62.5/125µm fiber cores across distances up to 550 meters (1,804 feet), making it a highly cost-effective option for indoor corporate floor links and building risers.
Toolless Hot-Pluggable Architecture
Network down-time can severely impact company productivity. D-Link eliminates operational friction by building the DEM-311GT with a fully hot-pluggable design. Network administrators can easily slide the transceiver into place or swap it out from any active MSA-compliant SFP slot without rebooting the host switch or disrupting running network pipelines.
Industrial Build Quality and Performance Features
Operating a reliable enterprise network core requires equipment built to handle continuous deployment safely. The D-Link DEM-311GT is physically engineered for maximum operational stability.
- Duplex LC Optical Interface: Features a secure, industry-standard duplex LC connector layout that locks optical patch cords rigidly into place, preventing accidental loose seating faults.
- Sturdy Metal Chassis Enclosure: Housed in a heavy-duty, completely metallic casing that provides superior defense against structural damage, blocks physical electromagnetic interference (EMI), and increases thermal dissipation efficiency.
- Unified Power Delivery: Draws small, low-voltage 3.3V operating currents directly from the host hardware slot, removing the need for clunky external power bricks or extra wall sockets.
Ideal Deployment Scenarios
The combination of a compact SFP footprint, 550m multi-mode capability, and wide hardware compliance makes the D-Link DEM-311GT exceptionally versatile:
- Intra-Building Server Connections: Connect edge distribution switches located on different floors or office wings back to your core server chassis cleanly using high-speed multi-mode fiber backbones.
- Storage Area Network (SAN) Links: Interconnect high-speed backup arrays and localized database servers directly to your primary network core to maintain seamless media streaming and file synchronization.
- Localized IP Surveillance Hubs: Aggregate incoming video streams from multi-camera arrays cleanly inside standard rack enclosures without taking up local copper ports intended for workstation drops.
Technical Specifications Table
| Metric Feature | Specification Detail |
|---|---|
| Model Number | DEM-311GT |
| Form Factor Profile | Small Form-Factor Pluggable (SFP MSA Compliant) |
| Network Standard | 1000BASE-SX |
| Optical Interface Connector | Duplex LC Port |
| Fiber Media Profile | Multi-Mode Fiber (50/125 µm or 62.5/125 µm MMF) |
| Laser Wavelength | 850 nm |
| Maximum Reach Range | Up to 550 Meters (on 50/125 µm OM2 lines) |
| Power Supply Draw | 3.3V Internal |
| Safety Certifications | Class 1 Laser Product, FDA 21 CFR, TUV, CE, FCC |
Frequently Asked Questions (FAQs)
Does the D-Link DEM-311GT require any software configuration?
No. The D-Link DEM-311GT functions as a hardware-level optical interface module. It features true plug-and-play capability, requiring zero driver downloads, software initialization steps, or administrative registration steps—you simply slide the transceiver into place to enable immediate fiber routing.
Can I connect a single-mode fiber cable to this multi-mode transceiver?
No. The optical transmitter and light receptors inside the LC port are specifically tuned for the wider core geometry of multi-mode fiber running an 850nm wavelength. Forcing a narrow single-mode cable line into the link will cause extreme light scattering, resulting in an immediate connection failure or massive packet loss.
Can I insert the DEM-311GT into third-party non-D-Link switches?
Yes. The D-Link DEM-311GT is engineered to fully comply with industry-wide SFP Multi-Source Agreement (MSA) standards. This structural compatibility allows it to interface cleanly with most major brands of switches, routers, and firewalls that feature open, non-proprietary SFP port slots.
