Cisco Business CBS220-48T-4G Full English Product Description

1. Product Overview

Model Suffix Breakdown

• 48: 48×10/100/1000BASE-T non-PoE copper access ports
• T: Data-only RJ45 ports without PoE power supply
• 4G: Four dedicated 1G SFP uplink ports supporting fiber long-distance transmission and horizontal hardware stacking
  No desktop "-E/D" tag means it adopts standard 19-inch 1RU metal rack chassis with integrated internal universal AC power supply. This web-managed switch delivers wire-speed non-blocking switching for office PCs, printers, NAS storage and non-powered wireless APs. Equipped with complete enterprise Layer 2 feature suite, advanced QoS, multilayer security and unified stack management, it is a scalable manageable core access switch for growing small and medium businesses.

2. Hardware Port Specifications

• Access Ports: 48 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, compatible with standard 1G SFP transceivers for long-distance upstream aggregation and inter-switch stacking
• Management Interfaces: RJ45 serial console port, HTML5 encrypted web GUI, Bluetooth mobile configuration, SNMP v1/v2c/v3
• LED Indicators: Independent front LEDs for global power, per-port link/activity, 10/100/1000 speed and SFP uplink status
• Hardware Reset Button: Recessed physical reset button to restore factory default configurations
• Cooling Architecture: Fully fanless passive heat sink, zero operational noise for classrooms, clinics and quiet office spaces
• Power Mode: Built-in internal wide-range AC PSU (100–240V 50/60Hz), zero PoE power budget for all copper ports

3. Core Performance Parameters

• Switching Capacity: 144 Gbps non-blocking wire-speed switching
• 64-byte Packet Forwarding Rate: 107.14 Mpps
• MAC Address Table Depth: 16,384 MAC entries
• Jumbo Frame Support: Up to 10,240 bytes for large file and surveillance video transmission
• Energy Compliance: IEEE 802.3az EEE auto power cut for idle links
• Max Full Traffic Load Power Consumption: ~36 W
• Idle Standby Power Draw: ~18 W

4. Physical & Environmental Specifications

• Form Factor: Standard full-width 1RU metal rack-mount chassis, desktop placement optional
• Dimensions (W × D × H): 445 mm × 310 mm × 44 mm
• Net Weight: 2.68 kg (5.91 lb)
• Operating Temperature: 0 °C to 50 °C (32 °F–122 °F), approved for out-of-wiring-closet deployment
• Storage Temperature: -25 °C to 70 °C (-13 °F–158 °F)
• Humidity: 10%–90% non-condensing
• Certifications: CE, FCC, UL, RoHS compliant; Cisco limited lifetime hardware warranty

5. Full Layer 2 Smart Switch Feature Set

• IEEE 802.1Q VLAN with up to 4094 VLAN IDs, dedicated voice VLAN optimized for IP phone deployment
• Complete STP family: STP, RSTP, MSTP fast convergence to eliminate Layer 2 broadcast loops
• Static LAG & IEEE 802.3ad LACP dynamic link aggregation, cross-stack LAG supported within CBS220 4G series
• IGMP Snooping v1/v2/v3 + Multicast VLAN Replication to reduce multicast bandwidth waste for multi-camera surveillance and IPTV
• Auxiliary L2 tools: Built-in cable diagnostics, hardware port isolation, broadcast storm suppression, auto power-off for idle ports

6. Exclusive Horizontal Stack Function (4G Series Only)

• Supports stacking up to 8 CBS220 4G model switches via SFP uplink ports
• Unified single-IP management for the entire stack, batch firmware upgrade and centralized configuration backup
• Hot-swappable stack members with seamless traffic forwarding during equipment replacement
• Higher aggregated inter-switch bandwidth than non-stackable 2G uplink CBS220 models

7. Enterprise-Grade Network Security

• 802.1X port authentication, MAC authentication and guest VLAN access control
• Port Security with configurable MAC address limits to defend against MAC flooding attacks
• IPv4/IPv6 ACL for fine-grained inbound and outbound traffic filtering
• Secure management channels: HTTPS web UI, SSH console, SNMPv3 encrypted transmission
• Anti-spoofing mechanisms: Dynamic ARP Inspection (DAI), IP Source Guard
• Full port surge and short-circuit protection for all 48 RJ45 copper ports

8. Automatic Hardware QoS Prioritization

• 4 independent hardware priority queues per Gigabit port
• Auto recognition and mapping of 802.1p CoS and DSCP marked packets
• Hybrid Strict Priority + WRR scheduling to guarantee low latency for VoIP voice and real-time surveillance video
• Port ingress/egress bandwidth policing and shaping to avoid single-port congestion

9. Multi-Mode Local & Centralized Management

• Local Management: HTML5 web GUI, RJ45 console CLI, Bluetooth wireless mobile configuration
• Centralized Enterprise Management: Compatible with Cisco Business Dashboard and Cisco DNA Center for cross-site batch monitoring, configuration push and zero-touch provisioning (ZTP)
• Firmware & Config Operations: TFTP/HTTP batch upgrade, one-click full-config backup & restore for single switch or full stack
• Monitoring Tools: SNMP, NTP time synchronization, real-time port traffic statistics, sFlow traffic sampling

10. Typical Application Scenarios

• High-density non-PoE office access layer for large teams of PCs and desktop printers
• University main computer labs, libraries and quiet education spaces requiring silent fanless managed switches
• Chain retail headquarters and shopping mall centralized workstation & NAS interconnection
• Scalable multi-switch stacked enterprise sub-networks with unified single-IP batch management
• Media design workgroups with large-capacity file transmission via 1G fiber uplink links
• Distributed low-bandwidth IoT sensor deployment outside centralized wiring closets without PoE power requirements

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