D-Link DEM-314GT Compatible 1000BASE-EX SFP 1310nm 40km DDM Duplex LC/UPC SMF Optical Transceiver Module

The HYTOPTODEVICE DEM-314GT compatible SFP is 100% hardware-tested for compatibility with:

• D-Link xStack Series Switches: DGS-3420, DGS-3620, DGS-3630, DGS-3120, DGS-3130.

• D-Link Managed Switches: DGS-1510, DGS-1210 (Smart Managed), DGS-3000 series.

• D-Link Chassis Switches: DES-7200 and DGS-8500 series line cards.

• D-Link Media Converters: DMC-1000 series chassis with SFP slots.

• Inter-Building Networking: Connecting remote office buildings or security stations up to 40km apart using single-mode fiber infrastructure.

• Metropolitan Area Networks (MAN): Providing reliable 1.25G fiber uplinks for municipal or regional government networks where 10km reach is insufficient.

• Enterprise Fiber Uplinks: Adding long-distance fiber reach for access-layer switches in large industrial parks or shopping complexes.

FAQ for D-Link DEM-314GT Compatible SFP Transceiver:

Q1: Is the HYTOPTODEVICE DEM-314GT a direct equivalent to the D-Link original? A: Yes. It is functionally identical to the original D-Link DEM-314GT, utilizing the same 1310nm laser and 40km distance rating, but optimized for better cost-efficiency for your network budget.

Q2: Does this 1G LH module support Digital Optical Monitoring (DOM)? A: Yes. The HYTOPTODEVICE DEM-314GT includes full DOM/DDM support, allowing you to monitor real-time diagnostics like laser temperature, supply voltage, and optical power via the D-Link web management interface or CLI.

Q3: Can I use this 40km SFP for a short-distance link (e.g., 2km)? A: Because this is an Extended Reach (LH/EX) module with a high-power laser, for links under 5km, we recommend using a 10dB LC optical attenuator to prevent the receiver from being over-saturated.

Q4: Will using HYTOPTODEVICE modules void my D-Link hardware warranty? A: No. Under international consumer protection laws and the Magnuson-Moss Act, using high-quality compatible transceivers will not void your hardware warranty.

Q5:D-Link DEM-314GT not working？ A:Follow these quick steps:

1. Check DDM: Run show transceiver detail on the switch. Look for Low Rx Power or faults.

2. Clean & Reseat: Clean the LC fiber connectors and firmly re-seat the SFP module.

3. Verify Fiber: Ensure you are using a single-mode (SMF) patch cable. Check for bends or breaks.

4. Swap Test: If possible, test the SFP in a different port or swap it with a known-working module to isolate the fault.

If DDM shows "Low Tx Power" or "Fault", the module is likely defective and needs replacement

Quality Assurance：Your Trusted Optical Transceiver Source

HYTOPTODEVICE is a vertically integrated manufacturer of high-performance optical transceivers. By controlling core materials at the source, we ensure every SFP module meets the highest standards of reliability and customization.

• Vertical Integration: In-house core material production ensures a stable, self-sufficient supply chain for all optical modules.

• Total Traceability: End-to-end oversight from raw components to final transceiver assembly guarantees 100% controllability.

• Bespoke Solutions: Expert-led R&D provides customized SFP transceiver designs tailored to your specific technical needs.

• 24-Hour Response: Our technical team guarantees a primary response to any inquiry or quality concern within 24 hours.

Carrier-Grade Quality. Factory-Direct Control. Rapid Response.

Quality Certification & Compliance：

At HYTOPTODEVICE, our quality commitment is backed by industry-standard validations. From fiber optical transceiver manufacturing to final inspection, our processes ensure global compliance and reliability.

We adhere to rigorous standards for our SFP modules and network solutions:

• ISO 9001: Certified quality management and production consistency.

• CE,UL & FCC: Fully compliant for seamless Global Market Access.

• RoHS: Committed to environmental responsibility and hazardous material control.

• Proven Reliability: Rigorous testing to reduce compliance risk and ensure safety.

Certified Quality. Global Standards. Guaranteed Performance.

Rigorous Industrial Product Testing：

   

100% 3rd Party Compatible：

Partial Test Demonstration: