D-Link DGS-3120-24TC/SI

Overview

The D-Link DGS-3120-24TC/SI is a managed Layer 2 and Layer 3 Gigabit Ethernet switch designed to provide enterprise-level network control for small and medium-sized businesses. It features twenty RJ45 Gigabit ports for direct device connections and four combo SFP slots that support both copper and fiber transceivers, offering flexible uplink and long-distance connectivity options. With a switching capacity of 88 Gbps, it handles heavy data traffic efficiently while supporting IPv6 management, access control lists, and static routing to meet modern networking demands.

Key features

• Twenty Gigabit RJ45 ports and four combo SFP slots provide versatile connection options for desktops, IP phones, wireless access points, and surveillance cameras.
• Layer 2 and Layer 3 management capabilities enable detailed traffic segmentation, policy enforcement, and support for IPv6 networks without hardware upgrades.
• Physical stacking support with 40 Gbps dedicated stack bandwidth allows multiple switches to be managed as a single unit, simplifying network administration and enhancing resilience.
• Advanced security features like IP-MAC-Port Binding and DHCP Snooping protect the network from unauthorized devices and fraudulent address assignments.
• D-Link Green technology intelligently reduces power consumption by powering down unused ports and adjusting fan speed based on traffic and temperature, lowering energy costs and heat output.
• Rack-mount design fits standard equipment cabinets, making it suitable for dense network environments such as server rooms and remote cabinets with limited airflow.

Key specs

• Ports: 20 x RJ45 Gigabit Ethernet, 4 x combo SFP slots (copper or fiber)
• Switching capacity: 88 Gbps
• Stack bandwidth: 40 Gbps
• Management: Layer 2 and Layer 3 with IPv6 support
• Security: IP-MAC-Port Binding, DHCP Snooping, access control lists
• Power-saving features: port-level energy management, smart fan control
• Form factor: rack-mountable

Connectivity and compatibility

This switch supports a wide range of network devices through its twenty Gigabit Ethernet ports and four combo SFP slots, which accept both copper and fiber transceivers. This flexibility allows seamless integration with existing network infrastructure and supports long-distance links where fiber is required. The device’s IPv6 management and static routing capabilities ensure compatibility with modern network protocols and future-proof your setup.

Performance and reliability

With an 88 Gbps switching capacity and 40 Gbps stack bandwidth, the switch handles high data throughput with low latency, making it suitable for environments with heavy traffic such as office networks, school campuses, or retail installations. The physical stacking feature enhances network resilience by allowing multiple units to operate as a single system, reducing downtime and simplifying maintenance. Security mechanisms protect against unauthorized access and network attacks, ensuring consistent service quality for voice and video applications.

Ideal uses and environments

The DGS-3120-24TC/SI fits well in growing office networks, educational campuses, and small to medium-sized enterprises that require reliable, scalable, and secure network infrastructure. It works effectively as an access layer switch connecting end-user devices or as an aggregation point consolidating multiple network segments. Its energy-efficient design and rack-mount form factor make it a strong choice for installations where power consumption and space are important considerations.

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, and include all tags, manuals, accessories, and original, unaltered packaging. To start a return, please email us for approval. Items sent back without approval may be refused or returned to the sender. If any item is kept, its value will be deducted from the refund.

Non-returnable items include opened TVs, combos, or monitors 37″ or larger, 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. Please allow 5–7 business days for the credit to post. Shipping and handling are nonrefundable. If an item is used, incomplete, or not in its original condition, a 30% restocking fee may apply. Direct exchanges are not offered. To exchange an item, please purchase the replacement separately and return the original for a refund.

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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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