D-Link DEM-311GT

Overview

The D-Link DEM-311GT is a Small Form Factor Pluggable (SFP) transceiver designed to provide a fast, fiber-based Gigabit Ethernet uplink for switches or routers with an open SFP slot. It supports the 1000Base-SX standard, delivering 1 Gbps full-duplex data transfer over multi-mode fiber. This transceiver is ideal for moving large files, backing up servers, or streaming high-bandwidth applications without network congestion.

Equipped with an LC connector, it supports transmission distances up to 220 meters on 62.5 micron fiber and up to 550 meters on 50 micron fiber. The metal housing protects the optics from electromagnetic interference and adds physical durability. Its hot-pluggable design allows network administrators to install or replace the module without shutting down equipment, ensuring continuous uptime in demanding environments.

Key features

• Provides a reliable 1 Gbps full-duplex connection over multi-mode fiber for high-speed data transfer
• Supports two common fiber types with distances up to 550 meters, accommodating various network layouts
• LC fiber connector ensures compatibility with widely used cabling systems and simplifies installation
• Hot-pluggable design enables easy upgrades or replacements without interrupting network operations
• Metal housing reduces electromagnetic interference, enhancing signal integrity and device longevity
• Backed by a two-year warranty and access to D-Link technical support for added peace of mind

Key specs

• Standard: 1000Base-SX Gigabit Ethernet
• Data rate: 1 Gbps full-duplex
• Fiber type: Multi-mode fiber
• Maximum distance: 220 meters on 62.5 micron fiber, 550 meters on 50 micron fiber
• Connector type: LC fiber connector
• Form factor: Small Form Factor Pluggable (SFP)
• Housing: Metal for EMI shielding and durability
• Hot-pluggable: Yes
• Warranty: Two years

Connectivity and compatibility

This transceiver fits into any switch or router with an open SFP slot, making it a flexible choice for expanding fiber links in various network setups. Its LC connector supports standard multi-mode fiber cabling, which is common in campus networks, server rooms, and branch offices. The module’s compatibility with both 50 micron and 62.5 micron fiber types allows it to integrate smoothly into existing infrastructure without requiring specialized cables.

Ideal uses and environments

The DEM-311GT is well suited to environments that require reliable, high-speed fiber connections with minimal downtime. It works well in campus networks where multiple buildings need to be linked, small business server rooms that handle large data transfers, and branch offices looking to extend fiber connections between closets or racks. Its hot-pluggable nature and durable design make it a strong choice for setups that demand continuous operation and easy maintenance.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

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Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, with tags, manuals, accessories, and original, unaltered packaging. Any item kept will be deducted from the refund. Start a return by sending us an email. Items sent back without approval may be refused or returned to the sender.

Some items are not returnable: opened TVs/combos/monitors 37″+, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method; allow 5–7 business days for the credit to post. Shipping, handling, customs duties, and import taxes are nonrefundable. If an item is used, incomplete, or not in original condition, a 30% restocking fee may apply. Direct exchanges are not offered; purchase the replacement and return the original for a refund.

We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

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