Cisco CBS350-48NGP-4X Full English Product Description
1. Short Sales Title (For Quotation & E-commerce Listing)
Cisco CBS350-48NGP-4X Business 350 Series 48-Port Multi-Gigabit PoE++ Fully Managed Layer 3 Switch, Global Standard Version, 740W Full PoE Power Budget, 4×10G SFP+ High-Speed Uplink Interfaces (4X = four 10G fiber uplinks, distinct from 4G 1G SFP models), Dual-Stack IPv4/IPv6 Dynamic Routing, True Stackable, 1RU Rackmount High-Density Multi-Gigabit PoE Aggregation Switch
2. Official Product Overview
The Cisco CBS350-48NGP-4X is a flagship high-density multi-gigabit full PoE++ fully managed Layer 3 switch within the Cisco Business 350 global product lineup. The suffix NGP stands for Multi-Gigabit PoE++, mixing standard Gigabit RJ45 PoE+ ports and high-speed 5GBase-T PoE++ ports supporting up to 60W per port, while 4X denotes four dedicated 10G SFP+ uplink slots for high-bandwidth fiber backbone backhaul, clearly separated from 4G models equipped with only 1G SFP uplinks. It delivers a massive 740W total PoE power budget, enabling all 48 access ports to operate at full PoE power simultaneously without allocation limits, designed for large enterprise multi-speed office networks, campus full Wi-Fi 6/6E coverage, mass 5G PTZ surveillance systems and high-power industrial IoT deployments worldwide.
Superior to entry-level CBS250 smart switches, the CBS350 platform delivers complete enterprise-grade managed capabilities: dynamic RIPv2 Layer 3 routing, true single-IP stacking (up to 4 units), comprehensive anti-spoofing security suite, sFlow traffic analytics and full-featured multicast control. This multi-speed PoE switch integrates data transmission and high-output PoE power supply in one 1RU rack unit, eliminating external power injectors for power-hungry 60W Wi-Fi access points, 5G high-resolution IP cameras, multi-line video VoIP phones and industrial monitoring terminals.
It features 40×10/100/1000BASE-T PoE+ RJ45 ports + 8×100M/1G/2.5G/5GBase-T PoE++ multi-gigabit RJ45 ports, plus 4 standalone dedicated 10G SFP+ fiber uplink slots for long-distance cross-building or cross-branch high-speed fiber interconnection, offering 48 multi-gigabit PoE access ports + 4×10G uplink interfaces for redundant multi-link backbone deployment. Equipped with a high-capacity internal power supply delivering a 740W total PoE budget, standard ports support 30W PoE+ and multi-gigabit ports support up to 60W PoE++ output for top-tier high-power PoE endpoints.
Powered by a high-performance ARM processor with 512MB DRAM and 256MB flash memory, it delivers 240 Gbps non-blocking switching capacity and 178.56 Mpps wire-speed forwarding rate for 64-byte frames, paired with a large 6MB shared dynamic packet buffer to eliminate congestion under mass 5G 4K streaming, bulk NAS storage transfers and cross-site high-bandwidth video conferences. Intelligent variable-speed multi-fan thermal design ensures stable 24/7 continuous rack operation in core data rooms, retail core server racks and campus central wiring closets.
3. Port & High-Power Multi-Gigabit PoE Hardware Specifications
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40 × 10/100/1000BASE-T RJ45 ports, IEEE 802.3at PoE+ compliant, max 30W per single port
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8 × 100M/1G/2.5G/5GBase-T multi-gigabit RJ45 ports, IEEE 802.3bt PoE++ compliant, max 60W per single port
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All 48 access ports support PoE power delivery; total PoE power budget: 740W Full PoE
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4 × dedicated 10G SFP+ uplink slots (fiber-only non-combo design, 4X = four 10G high-speed uplink ports, distinct from 4G 1G SFP models)
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Compatible Cisco transceivers: Gigabit SFP (MGBSX1/MGBLX1/MGBLH1/MGBT1), 10G SFP+ (SFP-10G-SR, SFP-10G-LR, SFP-10G-LX, copper twinax SFP+)
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Intelligent PoE management suite: time-based PoE scheduling, real-time per-port power monitoring, multi-level PoE priority classification, short-circuit, overload and over-temperature auto-cutoff protection
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Switching Capacity: 240 Gbps Non-Blocking
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Forwarding Rate (64-byte packets): 178.56 Mpps
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Shared Packet Buffer: 6 MB
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MAC Address Table: 16K entries; Jumbo Frame support up to 9000-byte MTU
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Dual console ports: RJ45 serial console + mini USB port for offline local CLI configuration
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Front-panel USB Type-A port for offline config backup & firmware upgrade
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True stacking capability: stack up to 4 CBS350 series switches under single IP unified management; fully supports cross-stack LAG, VLAN, QoS and remote port mirroring
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Universal internal AC power supply: 100–240V 50/60Hz global standard power cord
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Intelligent variable-speed multi-fan cooling system, automatically adjusts fan speed based on internal temperature
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Form Factor: 1RU standard rackmount chassis, support rack mount, wall mount and desktop placement
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Dimensions: 445 × 350 × 44 mm (17.5 × 13.78 × 1.73 inches)
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Weight: 3.45 kg (7.61 lbs)
4. Comprehensive Layer 2 Switching Functions
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Up to 4096 IEEE 802.1Q tagged VLANs, port-based VLAN, voice VLAN, guest VLAN, private VLAN, dedicated management VLAN
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8 priority egress queues with Strict Priority / WRR / SPQ QoS scheduling to prioritize multi-gigabit VoIP, 5G surveillance video and enterprise business data traffic
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IEEE 802.3ad LACP link aggregation, multiple LAG groups for bandwidth expansion & link redundancy, cross-stack LAG fully supported
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IGMP Snooping v1/v2/v3 with built-in IGMP Querier, supporting up to 1024 multicast groups for IPTV and mass multi-gigabit IP surveillance
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LLDP & LLDP-MED automatic endpoint discovery for PoE IP phones, 5G PTZ cameras and high-power Wi-Fi 6 wireless APs
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Port mirroring, VLAN mirroring, RSPAN remote mirroring, RSTP/MSTP/PVST+ spanning tree, BPDU Guard, Root Guard, Loop Guard
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Broadcast/multicast/unicast storm control to prevent multi-gigabit and 10G uplink flooding failures
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Enterprise anti-spoofing toolkit: DHCP Snooping, Dynamic ARP Inspection (DAI), IP Source Guard, static IP/MAC/Port Binding
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sFlow traffic monitoring for real-time 5G and 10G uplink bandwidth analysis and network fault troubleshooting
5. Advanced Dual-Stack Dynamic Layer 3 Routing
Far exceeding static-only routing on CBS250 smart switches, CBS350 provides full wire-speed Layer 3 forwarding:
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Dynamic routing protocol: RIPv2 for IPv4
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Up to 990 IPv4 static routes, 990 IPv6 static routes, 128 Layer 3 VLAN interfaces
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Native dual-stack IPv4/IPv6 wire-speed forwarding, CIDR aggregation, full IPv6 first-hop security (ND Inspection, RA Guard)
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Built-in IPv4 DHCP Server & DHCP Relay with Option 82, UDP relay functionality
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Policy-Based Routing (PBR) for flexible traffic steering across multi-speed segmented workgroups
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Direct inter-VLAN routing without external routers to reduce core gateway latency and bandwidth load for high-volume 10G backbone traffic
6. Enterprise-Grade Multi-Layer Security Suite
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IEEE 802.1X port-based authentication with RADIUS/TACACS+ centralized access control, web-based captive portal authentication
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Port security, static/dynamic MAC address binding, automatic port shutdown for unauthorized multi-gigabit-connected terminals
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Comprehensive DoS attack suppression, hardware accelerated L2-L4 ACL traffic filtering
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Encrypted management channels: HTTPS web GUI, SSH multi-privilege CLI, SCP file transfer, SNMPv3 secure remote monitoring
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Persistent syslog event logging, built-in cable diagnostic tools, mandatory password complexity policy
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Independent guest network isolation, Private VLAN Edge (PVE) for client separation
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Secure boot, encrypted configuration file storage, IPv6 ND Inspection & RA Guard to block IPv6 fiber link spoofing attacks
7. Energy-Saving Green Technologies
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IEEE 802.3az Energy Efficient Ethernet (EEE): auto power reduction for idle copper, SFP+ and multi-gigabit links
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Dynamic power tuning based on cable length to cut unnecessary power consumption
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Port LED dimming or full shutdown mode for unmanned fiber wiring closets
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Time-based PoE auto power on/off to eliminate idle power draw outside business hours
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Intelligent variable fan speed design to reduce power consumption and noise under light network load
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Low-power optimized hardware design with balanced heat dissipation and extended service lifespan
8. Multi-Mode Local & Remote Management
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Intuitive graphical web management interface (HTTP/HTTPS) with basic & advanced operation modes
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Dual offline local console access: serial RJ45 + mini USB port for offline CLI configuration
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SSH secure remote command line management with multi-user privilege levels (1 / 7 / 15)
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SNMP v1/v2c/v3 compatible with third-party network monitoring platforms, native sFlow support
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TFTP/SCP/offline USB firmware upgrade, dual redundant firmware images for reliable zero-downtime upgrades
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SNTP time synchronization, ping & traceroute diagnostic tools, Smartport auto-provisioning templates for multi-gigabit PoE endpoints
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Single IP stacking management for centralized batch control of up to 4 stacked CBS350 switches
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Fully compatible with Cisco Business Dashboard & Cisco Business Mobile App for unified topology visualization and zero-touch multi-gigabit network deployment
9. Physical & Environmental Parameters
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Operating Temperature: -5°C to 50°C; Storage Temperature: -25°C to 70°C
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Operating Humidity: 10%–90% non-condensing relative humidity
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Global compliance standards: CE, RoHS, UL, FCC Class A
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MTBF: 909,838 hours at 25°C ambient temperature
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Warranty: Cisco Limited Lifetime Hardware Warranty
10. Typical Deployment Scenarios
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Large enterprise multi-speed unified voice-data-wireless core access switch with mass 60W Wi-Fi 6 PoE++ APs and multi-line video VoIP phones
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Shopping mall & factory high-density multi-gigabit surveillance system with dozens of 5G PoE++ PTZ IP cameras and 10G fiber uplink aggregation
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Global multi-building campus core distribution switch with high-speed 10G SFP+ fiber interconnection between office, classroom and workshop buildings
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Industrial factory IoT power backbone switch for high-speed multi-gigabit monitoring terminals and wireless coverage
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Stackable multi-switch scalable enterprise network leveraging true stacking and dynamic Layer 3 routing for multi-floor cross-segment high-bandwidth traffic routing
11. Standard Package Contents
1 × Cisco CBS350-48NGP-4X Multi-Gigabit Full PoE++ Fully Managed Gigabit Switch (Global Standard Version)
1 × Global standard AC power cord
Rack mounting brackets and installation screws
Quick Start Guide & global regulatory compliance documents
Short Commercial Version (For Product Ads & Listing Titles)
The Cisco CBS350-48NGP-4X is a global multi-gigabit full PoE++ 48-port fully managed switch with 40×1G + 8×5G PoE access ports, a 740W full PoE budget and 4 dedicated 10G SFP+ high-speed fiber uplink ports (4X = four 10G uplink slots, separate from 1G SFP 4G models). Featuring dynamic dual-stack IPv4/IPv6 Layer 3 routing, true stacking capability, enterprise anti-spoofing security, full QoS and intelligent variable-speed fan thermal design, it delivers non-blocking high-capacity mixed-speed data and stable full 30W/60W PoE power supply for high-performance 5G IP cameras, Wi-Fi 6 APs and VoIP phones in large enterprise, retail mall and campus high-bandwidth core networks, supporting rack/wall/desktop deployment, energy-efficient hardware and Cisco Limited Lifetime Hardware Warranty.
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