D-Link DGS-3120-48PC/SI

Overview

The D-Link DGS-3120-48PC/SI is a 48-port Gigabit managed PoE switch designed to provide reliable and high-performance networking for campus and enterprise environments. It features 44 Power over Ethernet ports that deliver up to 370 watts of total power, enabling you to connect and power devices such as IP cameras, wireless access points, and VoIP phones through a single cable. With a switching capacity of 136 Gbps and support for advanced Layer 2 and Layer 3 functions, this switch ensures smooth data flow and robust network management for growing infrastructures.

Key features

• 44 Gigabit Ethernet ports with Power over Ethernet support to simplify device deployment and reduce cabling needs
• 4 combo SFP ports offering flexible uplink options for fiber or copper connections
• Physical stacking capability for up to six units, allowing easy network expansion and centralized management
• Advanced Layer 2 and Layer 3 features including Quality of Service and multicast support to prioritize critical traffic and optimize multimedia streaming
• IPv6 readiness combined with security measures like Access Control Lists and DHCP Snooping to protect against unauthorized access and network attacks
• Multiple management interfaces including web-based GUI, command line interface, and SNMP for versatile and convenient administration
• Energy-efficient design with D-Link Green technology to reduce power consumption without sacrificing performance

Key specs

• Ports: 44 Gigabit Ethernet PoE ports, 4 combo Gigabit SFP ports
• Total PoE power budget: 370 watts
• Switching capacity: 136 Gbps
• Layer support: Layer 2 and Layer 3 features including IPv6
• Management: Web GUI, CLI, SNMP
• Stacking: Supports physical stacking of up to 6 units
• Security: Access Control Lists, DHCP Snooping

Connectivity and compatibility

This switch offers a versatile range of connectivity options to fit various network setups. The 44 PoE-enabled Gigabit Ethernet ports allow you to connect and power a wide array of network devices directly, reducing the need for separate power sources. The 4 combo SFP ports provide flexible uplink choices, supporting both fiber and copper connections to integrate with existing infrastructure or extend network reach.

Performance and reliability

Designed to handle demanding network environments, the switch’s 136 Gbps switching capacity ensures smooth data transmission even during peak traffic periods. Its advanced traffic management features, such as Quality of Service and traffic shaping, help maintain consistent performance for critical applications like voice and video. The robust security features protect your network from unauthorized access and potential threats, making it a dependable choice for enterprise-grade deployments.

Ideal uses and environments

This switch is well suited to medium and large networks in corporate offices, educational campuses, and other professional settings where multiple networked devices require both data connectivity and power. IT professionals will appreciate its scalability, security, and energy efficiency, which support growing networks without compromising on performance or management simplicity.

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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