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Cisco CBS250-48T-4GNA-RF 250 Series Managed Gigabit Ethernet Switch - 48 Ports - 4 SFP Uplinks - Layer 2 - Rack-Mountable - Refurbished
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Product Features
Technical Overview
This Cisco 250 Series switch operates at Layer 2 of the OSI model, supporting essential switching features including IGMP snooping for efficient multicast traffic management, port mirroring for network monitoring and troubleshooting, and spanning tree protocol for network loop prevention. The switch architecture provides dedicated bandwidth per port with non-blocking design for consistent Gigabit performance across all connected devices.
The media flexibility supports both 1000Base-T over copper cabling and 1000Base-X over fiber optics, allowing network designers to choose the appropriate medium for distance requirements and interference environments. The four SFP slots support mini-GBIC transceivers for fiber uplinks or additional copper connections, providing expansion flexibility without sacrificing existing port availability.
Relevant factors for this section include Total Number of Network Ports, Network (RJ-45), Uplink Port, Media Type Supported. When those points are considered together, they give buyers a clearer picture of how the product is equipped, how it fits into deployment, and what kind of day-to-day role it is meant to support.
Key Product Advantages
This switch combines high port density with enterprise management features at an accessible price point, particularly in its refurbished condition. The 48-port configuration eliminates the need for multiple smaller switches in workgroup deployments, reducing complexity and potential failure points while maintaining consistent performance across all connected devices.
Professional Management Suite
Includes comprehensive management features such as VLAN support, QoS prioritization, port security, and SNMP monitoring for complete network visibility and control.
- Web-based management interface
- CLI access for advanced configuration
- SNMP v1/v2c/v3 support
Reliability & Warranty
Backed by Cisco's lifetime limited warranty on this refurbished unit, providing long-term confidence in your network infrastructure investment.
- Lifetime limited warranty
- Cisco refurbished certification
- Enterprise-grade components
Deployment Flexibility
The 1U rack-mountable design with front-to-back airflow fits standard 19-inch racks, while multiple mounting options support various installation scenarios.
- Standard 19-inch rack mounting
- Tool-less installation options
- Front-to-back cooling
Deployment / Use Cases
This 48-port managed switch is ideal for medium-sized office networks, educational computer labs, retail point-of-sale systems, and healthcare workgroup environments where reliable connectivity and basic network segmentation are required. The combination of high port count and management capabilities makes it suitable for networks supporting 40-50 devices with need for traffic isolation and performance monitoring.
The SFP uplink ports enable connection to fiber backbone networks or longer-distance links between buildings, while the managed features support creation of separate VLANs for different departments, guest networks, or device types. Organizations upgrading from unmanaged switches will appreciate the additional control without overwhelming complexity, while those replacing older Fast Ethernet infrastructure will benefit from the 10x performance improvement.
Office Network Core
Serve as the central switching point for workstations, printers, IP phones, and wireless access points in medium office environments with 40-50 connected devices.
Education Computer Lab
Provide reliable connectivity for computer lab workstations with ability to segment student devices from administrative networks and implement content filtering.
Physical Profile
The switch features a compact 1U form factor measuring 1.70 inches in height, 17.50 inches in width, and 10.70 inches in depth, designed specifically for standard 19-inch server rack installations. The steel construction provides durability in rack environments, while the 8.71-pound weight ensures stable mounting without excessive stress on rack rails. Front-panel status LEDs provide at-a-glance monitoring of port activity, link status, and system health, with rear-panel power input and grounding points for proper installation.
- Width
- 17.50" (444.50 mm)
- Depth
- 10.70" (271.78 mm)
- Height
- 1.70" (43.18 mm)
- Weight
- 8.71 lb (3950.79 g)
Highlights
- 48 Gigabit Ethernet ports for high-density connectivity
- 4 SFP expansion slots for fiber or additional copper uplinks
- Layer 2 managed switching with VLAN, QoS, and security features
- 1U rack-mountable form factor for standard server rack installation
- Supports both 1000Base-T copper and 1000Base-X fiber connections
- Web-based management interface with CLI access for advanced configuration
- Lifetime limited warranty on refurbished unit
- 48.64W typical power consumption for energy efficiency
- Front-to-back airflow design for proper rack cooling
- Enterprise-grade components with Cisco refurbished certification
Specifications
| Specifications | |
|---|---|
| Manufacturer | Cisco Systems, Inc |
| Manufacturer Part Number | CBS250-48T-4GNA-RF |
| Brand Name | Cisco |
| Product Series | 250 |
| Product Model | CBS250-48T-4G |
| Product Name | 250 CBS250-48T-4G Ethernet Switch |
| Product Condition | Refurbished |
| Product Type | Ethernet Switch |
| Interfaces/Ports | |
| Total Number of Network Ports | 48 |
| Network (RJ-45) | Yes |
| Uplink Port | Yes |
| Modular | Yes |
| Port/Expansion Slot Details | 48 x Gigabit Ethernet Network,4 x Gigabit Ethernet Expansion Slot |
| Media & Performance | |
| Media Type Supported | Optical Fiber,Twisted Pair |
| Ethernet Technology | Gigabit Ethernet |
| Network Technology | 1000Base-T,1000Base-X |
| I/O Expansions | |
| Total Number of Expansion Slots | 4 |
| Expansion Slot Type | SFP (mini-GBIC) |
| Shared SFP Slot | Yes |
| Number of SFP Slots | 4 |
| Network & Communication | |
| Layer Supported | 2 |
| Management & Protocols | |
| Manageable | Yes |
| Power Description | |
| PoE (RJ-45) Port | No |
| Power Source | Power Supply |
| Power Consumption | 48.64 W |
| Physical Characteristics | |
| Form Factor | Rack-mountable |
| Height | 1.70" (43.18 mm) |
| Width | 17.50" (444.50 mm) |
| Depth | 10.70" (271.78 mm) |
| Weight (Approximate) | 8.71 lb (3950.79 g) |
| Miscellaneous | |
| Environmental Compliance | Waste Electrical and Electronic Equipment Directive (WEEE) |
| Country of Origin | China |
| Warranty | |
| Limited Warranty | Lifetime |
FAQ
What is the total number of ports on this Cisco switch?
This Cisco CBS250-48T-4G switch provides 48 Gigabit Ethernet ports for connecting network devices, plus 4 additional SFP expansion slots that can be used for uplink connections. The SFP slots support mini-GBIC transceivers for either fiber optic or copper connections, giving you flexibility in how you connect to other network segments or longer-distance links.
Does this switch support Power over Ethernet (PoE)?
No, this particular model does not provide Power over Ethernet capabilities. The switch requires connected devices to have their own power sources. If you need to power IP phones, wireless access points, or other PoE devices through your switch, you would need to consider a different model from Cisco's portfolio that includes PoE support.
What management features are included with this Layer 2 switch?
As a managed Layer 2 switch, it includes comprehensive management capabilities such as VLAN support for network segmentation, Quality of Service (QoS) for traffic prioritization, port security features, IGMP snooping for multicast optimization, port mirroring for traffic monitoring, and spanning tree protocol for loop prevention. Management can be accessed through a web-based interface or command-line interface (CLI) for advanced configuration.
Can this switch be mounted in a standard server rack?
Yes, this switch is designed for standard 19-inch server rack installation with a 1U form factor. It measures 1.70 inches in height, 17.50 inches in width, and 10.70 inches in depth, fitting perfectly in most server racks. The design includes front-to-back airflow to work properly in rack environments and comes with the necessary mounting hardware for installation.
What type of warranty comes with this refurbished Cisco switch?
This refurbished Cisco switch comes with a lifetime limited warranty from Cisco. Refurbished units undergo thorough testing and certification processes to ensure they meet original performance specifications. The warranty provides coverage for defects in materials and workmanship, giving you confidence in the reliability of your network infrastructure investment.
What are the SFP slots used for on this switch?
The four SFP (Small Form-factor Pluggable) slots are expansion ports that accept mini-GBIC transceivers for connecting to fiber optic networks or for additional copper connections. These slots are typically used for uplinks to other switches, connections to servers, or links between buildings where longer distances are required. They provide flexibility to choose the appropriate media type (fiber or copper) based on your specific network requirements.
| Qty | Price | Available |
|---|
