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DGE-891/B
D-Link 1 port 10/100/1000Base-T to 1000Base-LX Gigabit Ether...
Federal agencies and Fortune 500 operations source through ORM Systems.
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Enterprise Clients
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Ten years serving buyers who audit their vendors. From federal agencies to 20,000+ enterprise clients worldwide.
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.
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| 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 |
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
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.
The DGE-891/B transmits at 1550 nm and receives at 1310 nm for 1000Base-LX single-fiber links.
Yes, single-fiber operation requires two DGE-891/B units—one for TX:1550/RX:1310 nm and one for TX:1310/RX:1550 nm.
Yes, you can use a single DGE-891/B on a duplex single-mode fiber with separate transmit and receive fibers.
Yes, the DGE-891/B can interoperate with the DMC-1100 for mixed media environments, provided the wavelength and fiber type match.
The DGE-891/B accepts a 5 VDC external power adapter and supports integration into D-Link chassis with compatible power modules.
Simply connect the copper Ethernet cable to the 10/100/1000Base-T port, connect the SC fiber cable, plug in the 5 VDC power adapter, and verify LED status.
The DGE-891/B features Power, Link/Act for both copper and fiber ports, and 1000Mbps indicator LEDs for link speed status.
The DGE-891/B operates between 0 °C and 50 °C (32 °F to 122 °F) and stores between –10 °C and 70 °C (14 °F to 158 °F).
The DGE-891/B is ideal for extending Gigabit Ethernet networks over long distances, campus backbones, surveillance systems and industrial environments.
Yes, the DGE-891/B supports auto-negotiation on the copper port and IEEE 802.3x flow control for reliable data transmission.
The DGE-891/B measures 95 × 70 × 26 mm and weighs approximately 170 g, making it compact for desktop or rack-mount chassis installation.
D-Link offers a limited lifetime warranty on the DGE-891/B along with 24/7 technical support and online resources for configuration and troubleshooting.
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