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Cisco CBS250-48P-4GNA-RF 250 Series Managed Gigabit Ethernet Switch - 48 Port PoE+ with 4 SFP Uplinks - Refurbished
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Product Features
Technical Overview
This switch operates at Gigabit Ethernet speeds with support for 1000Base-T and 1000Base-X network technologies, ensuring high-throughput data transfer across all ports. The four shared SFP slots enable flexible uplink configurations using fiber optic or copper transceivers, extending network reach and supporting backbone connections. Layer 2 switching capabilities include VLAN support, QoS prioritization, and advanced security features for segmented and optimized traffic flow.
Power is supplied through an integrated power supply with PoE+ support, delivering up to 370W across the 48 PoE+ ports. The switch's manageable interface allows for detailed configuration via web GUI, CLI, or SNMP, providing administrators with full control over network setup, monitoring, and troubleshooting. Physical specifications confirm a standard 19-inch rack width with a depth of 13.80 inches, making it compatible with most network rack systems.
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
The Cisco 250 Series switch combines high port density with substantial PoE capacity, making it an ideal choice for powering and connecting numerous network devices simultaneously. Its managed capabilities provide granular control over network performance and security, while the SFP uplinks offer scalability for future network expansion.
High-Density PoE+
With 48 PoE+ ports and a 370W budget, this switch can power a large array of PoE devices, reducing the need for additional power injectors and simplifying cable management.
- Supports IEEE 802.3at PoE+
- Powers IP phones, APs, cameras
- Centralized power management
Flexible Uplink Options
The four SFP slots allow for fiber or copper uplinks, enabling long-distance connections and high-bandwidth aggregation to core network switches or routers.
- 4 shared SFP slots
- Supports fiber optic transceivers
- Enables backbone connectivity
Enterprise-Grade Management
Layer 2 management features include VLANs, QoS, port security, and monitoring tools, giving network administrators precise control over traffic and network health.
- Web GUI and CLI access
- IGMP snooping for multicast
- Spanning tree for redundancy
Deployment / Use Cases
This switch is well-suited for medium to large business networks where high port count, PoE delivery, and managed features are critical. It serves as an access layer switch in office environments, connecting end-user devices and providing power to VoIP systems and wireless infrastructure.
In retail or education settings, the 48 PoE+ ports can support extensive deployments of IP cameras and access points, ensuring reliable connectivity and power. The SFP uplinks facilitate connections to distribution or core switches, making it a versatile component in stacked or daisy-chained network topologies. Its rack-mountable design ensures neat installation in server rooms or network closets, aligning with professional IT deployment standards.
Physical Profile
The switch features a compact 1U rack-mountable chassis with dimensions of 1.70 inches in height, 17.50 inches in width, and 13.80 inches in depth. This standard form factor fits seamlessly into 19-inch network racks, with front-facing RJ-45 ports and SFP slots for easy cable access. The unit weighs approximately 11.97 pounds, making it manageable for installation and maintenance. The robust construction ensures durability in continuous operation environments, with ventilation designed for adequate airflow to maintain optimal performance.
- Width
- 17.50" (444.50 mm)
- Depth
- 13.80" (350.52 mm)
- Height
- 1.70" (43.18 mm)
- Weight
- 11.97 lb (5429.50 g)
Highlights
- 48 Gigabit Ethernet PoE+ ports for high-density connectivity
- 4 SFP uplink slots supporting fiber optic and copper transceivers
- 370W total PoE budget to power IP phones, cameras, and access points
- Layer 2 managed switch with VLAN, QoS, and security features
- Rack-mountable 1U form factor for standard 19-inch cabinets
- Gigabit Ethernet speeds with 1000Base-T and 1000Base-X support
- Refurbished condition with rigorous testing and lifetime warranty
- Web GUI, CLI, and SNMP management for full network control
Specifications
| Specifications | |
|---|---|
| Manufacturer | Cisco Systems, Inc |
| Manufacturer Part Number | CBS250-48P-4GNA-RF |
| Brand Name | Cisco |
| Product Line | Business |
| Product Series | 250 |
| Product Model | CBS250-48P-4G |
| Product Name | 250 CBS250-48P-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 PoE+,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 | Yes |
| PoE Budget | 370 W |
| Power Source | Power Supply,PoE+ |
| Power Consumption | 451.95 W |
| Physical Characteristics | |
| Form Factor | Rack-mountable |
| Height | 1.70" (43.18 mm) |
| Width | 17.50" (444.50 mm) |
| Depth | 13.80" (350.52 mm) |
| Weight (Approximate) | 11.97 lb (5429.50 g) |
| Miscellaneous | |
| Country of Origin | China |
| Warranty | |
| Limited Warranty | Lifetime |
User Manual
FAQ
How many devices can this switch power with PoE?
The switch has a total PoE budget of 370W across its 48 PoE+ ports. This allows it to power multiple PoE devices simultaneously, such as IP phones, wireless access points, and security cameras. The exact number of devices depends on the power requirements of each connected device, but the 370W budget provides substantial capacity for typical business deployments.
What types of uplink connections are supported?
This switch includes four SFP (mini-GBIC) expansion slots that support both fiber optic and copper transceivers. These uplinks enable connections to other switches or routers using 1000Base-X technology, allowing for longer-distance fiber links or high-speed copper aggregation. The slots are shared, providing flexibility in uplink configuration based on network needs.
Is this switch manageable, and what features does it offer?
Yes, this is a fully manageable Layer 2 switch. It offers features such as VLAN support for network segmentation, QoS for traffic prioritization, IGMP snooping for efficient multicast handling, port mirroring for monitoring, and spanning tree protocols for redundancy. Management can be done via a web-based GUI, command-line interface (CLI), or SNMP for integration with network management systems.
What are the physical dimensions and rack compatibility?
The switch measures 1.70 inches in height, 17.50 inches in width, and 13.80 inches in depth, making it a standard 1U rack-mountable unit. It is designed to fit into 19-inch wide network racks, with front-facing ports for easy cable access. The weight is approximately 11.97 pounds, ensuring it is sturdy yet manageable for installation in server rooms or network closets.
What does refurbished condition mean for this switch?
Refurbished means the switch has been previously used or returned, then thoroughly tested, cleaned, and restored to full working condition. It undergoes quality checks to ensure it meets performance standards. This Cisco refurbished switch comes with a lifetime limited warranty, providing a reliable, cost-effective alternative to new equipment while maintaining Cisco's quality and support.
Can this switch be used in a stacked configuration?
While this specific model does not support stacking via dedicated stacking ports, it can be integrated into a network using uplink connections to other switches. The four SFP slots allow for daisy-chaining or connecting to a core switch, enabling scalable network expansion. For stacking-specific features, consider Cisco models designed with stacking capabilities, but this switch excels as a managed access layer device with high port density.
| Qty | Price | Available |
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