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Media converter provided stable single fiber gigabit connectivity.
DGE-891/B
D-Link 1 port 10/100/1000Base-T to 1000Base-LX Gigabit Ether...
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DGE-891/B
D-Link 1 port 10/100/1000Base-T to 1000Base-LX Gigabit Ether...
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DGE-891/B is a QSFP transceiver engineered for high-speed data communications. It supports a 100G data rate using MPO connectors and is optimized for long-range applications with single-mode fiber. The module adheres to industry standards, supporting both Ethernet and Fibre Channel protocols, and offers a compact form factor ideal for data centers, enterprise networks, and telecom infrastructures.
Designed with performance and reliability in mind, the DGE-891/B features precise physical dimensions for seamless integration into modern network systems. Its robust build and efficient power consumption make it a dependable choice for network upgrades and critical communication environments where high throughput and extended reach are essential.
DGE-891/B price is is available on request. Get immediate quote.
Request bulk order quote for DGE-891/B for additional pricing. Browse the full D-Link Transceivers series or explore all D-Link products.
A financial services firm links its primary and backup data centers 18 km apart using paired DGE-891/B-D-Link 1 port 10/100/1000Base-T to 1000Base-LX converters (single-mode single fiber, TX 1550 nm/RX 1310 nm, SC interface). Deployed standalone or in a DMC-1100 chassis, it delivers full-duplex 1 Gbps over dark fiber with ultra-low latency and high signal integrity. Outcome: Secure, carrier-grade inter-site connectivity that meets SLA requirements, reduces latency, and lowers operational costs.
An automotive assembly plant extends its Ethernet control network 12 km across a facility prone to electromagnetic interference. By pairing DGE-891/B-D-Link single-mode, single-fiber converters (TX 1550 nm/RX 1310 nm, SC interface), the solution isolates sensitive PLC and SCADA traffic from EMI. Deployed standalone for point-to-point links or mounted in a DMC-1100 chassis, it ensures reliable 1 Gbps connectivity with zero packet loss. Outcome: Robust industrial network with enhanced uptime, simplified troubleshooting, and immune to harsh electrical noise.
A university IT department extends its backbone to a remote research facility 16 km away using DGE-891/B-D-Link converters in a DMC-1100 media converter chassis. The single-mode, single-fiber SC interface modules (TX 1550 nm/RX 1310 nm) support 10/100/1000 Mbps, hot-swappable bays, and centralized power. Outcome: Cost-effective campus expansion, gigabit-class bandwidth for labs and lecture halls, simplified cable management, and future-proof scalability up to 20 km.
To get the detailed certification, please go to the Compliance Center.
 DGE-891/B |  DGE-871 |  DFE-851 |  DEM-432XT |  DGE-894/B | |
|---|---|---|---|---|---|
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Form Factor | QSFP | SFP+ | SFP | QSFP+ | QSFP |
| Data Rate | 100G | 10G | 10G | 100G | 100G |
| Connector Type | MPO | LC | LC | LC | LC |
| Wavelength | 1310nm | 850 nm | 1310 nm | 1310nm | 1310 nm |
| Transmission Distance | Long-Range | Short-Range | Short-Range | Long-Range | Short-Range |
| Fiber Type | Single-mode | Multi-mode | Single-mode | Single-mode | Multi-mode |
| Max Distance | 80 km | 300 meters | 10 km | 80 km | 150 meters |
| Supported Protocols | Ethernet / Fibre Channel | Ethernet | Ethernet | Ethernet, Fibre Channel | Ethernet |
| Network Interface | Fiber | Fiber | Fiber | Fiber | Fiber |
| Power Consumption | 7.0W | 3.0 W | 3.5W | 12.5W | 4.5W |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Input Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Compatibility | Cisco / Juniper / Huawei / Arista | Cisco, Juniper, Huawei, Arista | Cisco, Juniper, Huawei, Arista | Cisco, Juniper, Huawei | Cisco / Juniper / Huawei / Arista |
| Product Name | DGE-891/B QSFP High-Speed Transceiver | DGE-871 SFP+ Short-Range Transceiver | DFE-851 10G SFP Transceiver | DEM-432XT High-Speed Optical Transceiver | DGE-894/B QSFP 100G Short Range Transceiver |
| Height | 0.95 inches | 0.13 inches | 0.7 inches | 0.33 inches | 0.35 inches |
| Width | 0.90 inches | 0.55 inches | 0.5 inches | 0.78 inches | 0.82 inches |
| Depth | 1.50 inches | 1.0 inches | 0.9 inches | 1.0 inches | 1.30 inches |
| Weight | 0.20 lbs | 0.1 lbs | 0.1 lbs | 0.25 lbs | 0.15 lbs |
Media converter provided stable single fiber gigabit connectivity.
Worked well as a pair across long distance.
No drops or signal instability noticed.
Reliable solution for extending gigabit links.
Predictable and consistent performance.
The DGE-891/B is a D-Link media converter that converts a 10/100/1000Base-T copper Ethernet link to a 1000Base-LX single-mode single-fiber link with SC interface.
The DGE-891/B supports 10Mbps, 100Mbps and 1000Mbps on the copper 10/100/1000Base-T port and 1000Mbps on the 1000Base-LX fiber port.
It uses single-mode single-fiber (SMF) technology with an SC optical interface for 1000Base-LX transmission.
The DGE-891/B supports single-fiber transmission distances up to 20 km.