Description
The D-Link xStack DGS-3120-48PC/SI is a high-performance Layer 3 managed Gigabit switch designed for enterprise networks that demand scalability, reliability, and advanced control. Featuring 48 Gigabit PoE+ ports and 4 combo SFP uplinks, this switch enables seamless connectivity for high-density environments such as campus networks, data centers, and IP surveillance deployments.
Built with stacking capabilities and a robust switching architecture, it delivers high throughput and resilient network performance. Advanced Layer 2 and Layer 3 features, including VLAN segmentation, routing protocols, and comprehensive security controls, ensure efficient traffic management and secure network access. With integrated PoE+ support, it powers connected devices such as IP cameras, VoIP phones, and wireless access points directly through Ethernet, simplifying deployment and reducing infrastructure costs.
The DGS-3120-48PC/SI is engineered for business continuity, offering redundancy support, intelligent traffic prioritization, and centralized management, making it a dependable backbone solution for modern enterprise networks.
| Feature | Specification |
|---|---|
| Switch Type | Layer 3 Managed Gigabit Switch |
| Port Configuration | 48 x 10/100/1000 Mbps Gigabit Ethernet PoE+ Ports |
| Uplink Ports | 4 x Combo 10/100/1000BASE-T/SFP Ports |
| Stacking Capability | Yes, with dedicated stacking ports |
| Switching Capacity | Up to 136 Gbps |
| Forwarding Rate | Up to 101.19 Mpps |
| PoE Standard | IEEE 802.3af and IEEE 802.3at (PoE+) |
| PoE Power Budget | Up to 370W (expandable with RPS) |
| VLAN Support | IEEE 802.1Q VLAN, Private VLAN, Voice VLAN |
| Routing Protocols | RIP, OSPF, VRRP |
| Security Features | ACL, 802.1X authentication, RADIUS, TACACS+, SSH, SSL |
| Network Management | Web GUI, CLI, SNMP v1/v2c/v3 |
| MAC Address Table | Up to 16,000 entries |
| Jumbo Frame Support | Up to 13K Bytes |
| Redundancy Support | External Redundant Power Supply (RPS) compatible |
| Operating Temperature | 0°C to 50°C |
| Form Factor | Rack-mountable (1U) |
| Power Input | 100–240 VAC, 50/60 Hz |
Payment & Security
Your payment information is processed securely, and we do not store credit card details or access your credit card information.
Return Policy (Short Summary)
We offer a 30-day return window for most unopened, factory-sealed items.
Returns must be authorized before shipping back and must include all original packaging and accessories. Opened or used items are not returnable unless defective.
Some products—such as custom orders, special-order items, audio gear, software, and LED video walls—are non-returnable. Non-defective returns may be subject to a 20–30% restocking fee, and customers are responsible for return shipping costs.
For damaged or incorrect items, please contact us immediately.
From Scope to Sign-Off
A structured delivery process designed to reduce risk and keep projects moving.
Plan
Discovery, site review, requirements gathering, and project alignment. We define scope, constraints, and success criteria before any design work begins.
- Discovery calls & stakeholder interviews
- On-site survey & infrastructure review
- Requirements & use-case documentation
- Project scope, timeline & milestone alignment
Engineer
System design, schematics, signal flow, BOM development, and documentation. Every project leaves this phase with a complete engineering package.
- AV system design & signal flow diagrams
- Equipment selection & BOM development
- Rack layout & control system design
- As-built documentation package
Deploy
Procurement, logistics, installation, programming, commissioning, and training. We own the delivery from first shipment to final handoff.
- Authorized procurement & logistics coordination
- Physical installation & cable management
- Control system programming & configuration
- Commissioning, testing & end-user training
Support
Monitoring, maintenance, lifecycle planning, and long-term service agreements. We stay engaged long after project close.
- 24/7 remote system monitoring
- Preventive & reactive maintenance
- Technology lifecycle & refresh planning
- Long-term service level agreements
A decade of delivery — trusted by 275+ clients across industries
