Cisco Business CBS220-24T-4G Full English Product Description

1. Product Overview

Model Suffix Explanation

• 24: 24×10/100/1000BASE-T non-PoE copper access ports
• T: Data-only RJ45 ports without PoE power supply
• 4G: Four dedicated 1G SFP uplink slots for long-distance fiber/DAC upstream aggregation
  No "-E/D" suffix indicates standard 19-inch 1RU rack chassis with built-in internal universal AC power supply, desktop external DC adapter is not required. This web-managed switch delivers wire-speed non-blocking switching for office PCs, printers, NAS storage and non-powered Wi-Fi access points. It integrates complete enterprise-grade Layer 2 functions, advanced QoS, multi-layer security and hardware stacking capability, ideal for growing SMB networks without dedicated full-time IT engineers.

2. Hardware Port Specifications

• Access Ports: 24 × auto-sensing 10/100/1000BASE-T RJ45 copper ports, non-PoE, Auto MDI/MDI-X, Cat5e/Cat6 compatible
• Uplink Interfaces: 4 × dedicated 1G SFP fiber slots, support 1G fiber transceivers or DAC copper cables for upstream connection to core aggregation switches
• Management Interfaces: RJ45 serial console port, HTML5 web management GUI, Bluetooth mobile configuration, SNMP v1/v2c/v3
• LED Indicators: Separate front-panel LEDs for global power status, per-port link/activity, 10/100/1000Mbps speed and SFP uplink operating status
• Hardware Reset Button: Recessed physical reset button for one-click restoration of factory default configurations
• Cooling Architecture: Fully fanless passive heat sink design with zero operational noise, suitable for classrooms, medical clinics and quiet open office spaces
• Power Mode: Integrated internal wide-range universal PSU; zero PoE power budget for all copper data ports

3. Core Performance Parameters

• Switching Capacity: 72 Gbps non-blocking wire-speed switching
• 64-byte Packet Forwarding Rate: 53.57 Mpps
• MAC Address Table Depth: 16,384 MAC entries
• Jumbo Frame Support: Up to 10,240 bytes for large file and 4K surveillance video transmission
• Energy Efficiency Standard: IEEE 802.3az EEE auto power disable for idle Ethernet links
• Max Full Traffic Load Power Consumption: ~30 W
• Idle Standby Power Draw: ~15 W
• Input Power: Built-in internal AC power supply, wide input 100–240V 50/60Hz

4. Physical & Environmental Specifications

• Form Factor: Standard full-width 1RU metal rack-mount chassis, desktop flat placement optional
• Dimensions (W × D × H): 445 mm × 290 mm × 44 mm
• Net Weight: 2.25 kg (4.96 lb)
• Operating Temperature Range: 0 °C to 50 °C (32 °F to 122 °F), certified for out-of-wiring-closet installation
• Storage Temperature Range: -25 °C to 70 °C (-13 °F to 158 °F)
• Relative Humidity: 10%–90% non-condensing humidity during operation and storage
• Compliance Certifications: CE, FCC, UL, RoHS compliant; Cisco limited lifetime hardware warranty

5. Complete Layer 2 Smart Switch Feature Set

• IEEE 802.1Q VLAN, supports up to 4094 VLAN IDs, dedicated voice VLAN optimized for IP phone deployment
• Full STP suite: STP, RSTP, MSTP with fast convergence to eliminate Layer 2 broadcast forwarding loops
• Static LAG & IEEE 802.3ad LACP dynamic link aggregation, cross-stack LAG supported for stacked CBS220 4G series switches
• Multicast Optimization: IGMP Snooping v1/v2/v3 + Multicast VLAN Replication to reduce bandwidth waste for IPTV and multi-camera surveillance streams
• Auxiliary L2 Tools: Embedded cable diagnostic tool, hardware port isolation, broadcast/multicast storm suppression, automatic port power saving on link down

6. Hardware Horizontal Stack Capability (4G Series Exclusive)

• Supports stacking up to 8 CBS220-4G model switches via SFP uplink ports
• Unified single-IP management for the entire stack, enabling batch configuration, batch firmware upgrades and cross-stack real-time traffic monitoring
• Hot-swappable stack member support with seamless traffic failover during device replacement
• Higher aggregated inter-switch bandwidth compared to non-stackable 2G uplink CBS220 variants

7. Enterprise-Grade Multi-Layer Network Security

• 802.1X port-based authentication, MAC authentication and guest VLAN access control
• Port Security with configurable MAC address learning limits to defend against malicious MAC flooding attacks
• IPv4/IPv6 ACL for fine-grained inbound and outbound traffic filtering
• Secure management transmission: HTTPS encrypted Web UI, SSH console CLI, SNMPv3 encryption
• Anti-spoofing protection: Dynamic ARP Inspection (DAI), IP Source Guard to block IP/MAC address spoofing
• Multi-layer surge and short-circuit protection for all RJ45 copper ports

8. Advanced Hardware QoS Intelligent Traffic Prioritization

• 4 independent hardware priority queues per Gigabit port
• Automatic classification and mapping of 802.1p CoS and DSCP marked packets without manual configuration
• Hybrid Strict Priority + WRR scheduling to guarantee low latency for VoIP voice and real-time surveillance video
• Port ingress/egress bandwidth policing and traffic shaping to avoid single-port bandwidth congestion

9. Multi-Mode Local & Centralized Management

• Local Management: Intuitive HTML5 web GUI, RJ45 console CLI, Bluetooth wireless mobile configuration
• Cross-Site Centralized Management: Compatible with Cisco Business Dashboard and Cisco DNA Center for unified multi-branch monitoring, batch configuration push and zero-touch provisioning (ZTP)
• Firmware & Configuration Management: TFTP/HTTP batch firmware upgrade, one-click full configuration backup & restore for single switch or full stack
• Monitoring Tools: SNMPv1/v2c/v3, NTP time synchronization, real-time port traffic statistics, sFlow traffic sampling

10. Typical Application Scenarios

• Medium-to-high density office non-PoE managed access layer for bulk staff PCs and desktop terminals
• School main computer labs, libraries and quiet education environments with fanless silent hardware requirements
• Chain retail headquarters and shopping mall workstation & centralized NAS storage interconnection
• Scalable multi-switch stacked workgroups requiring unified single-IP batch management
• Remote satellite branch main aggregation with long-distance 1G fiber uplink bandwidth expansion
• Distributed low-bandwidth IoT sensor deployment outside centralized wiring closets without PoE power demands

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