Cisco WS-X4920-GB-RJ45 Full Official Technical Specification Document

1. Product Overview

Official Full Designation

Cisco WS-X4920-GB-RJ45 is theCatalyst 4900M Series Half-Slot 20-Port 10/100/1000BASE-T Gigabit RJ45 Hot-Swappable Line Card, a compact half-width modular copper interface card exclusively designed for the Cisco Catalyst 4900M modular chassis platform, supporting Catalyst 4500E-series compatible supervisor engines (Supervisor 6-E / 7-E / 7L-E / 8-E / 8L-E). It delivers wire-speed auto-sensing Gigabit copper switching with zero PoE inline power support, optimized for small-density access layer workstation aggregation, branch office compact rack deployments, server auxiliary data ports, IP surveillance management links, and low-port-count wiring closet environments.

Core Definition: Half-slot hot-swappable Catalyst 4900M line card equipped with 20 independent auto-sensing 10/100/1000BASE-T RJ45 ports, sharing the chassis backplane switching capacity managed by the installed supervisor engine’s centralized forwarding ASIC (CenterFlex architecture)Cisco. This is a pure data-only module without any PoE power delivery circuits, supporting IEEE 802.3az Energy Efficient Ethernet (EEE), jumbo frames up to 9216 bytes, full hardware QoS queuing, complete Layer 2/lightweight Layer 3 feature compatibility, and all unified communications and enterprise security functions inherited from the chassis supervisor engine.

SKU Naming Breakdown

1. WS-X: Cisco modular switch line card / interface module product prefix
2. 49: Dedicated Catalyst 4900M half-slot compact line card family (distinct from full-width 46xx/47xx Catalyst 4500E line cards)
3. 20: Total physical port quantity on the module (20 Gigabit RJ45 copper ports)
4. GB: Gigabit Ethernet (10/100/1000BASE-T) media type identifier
5. RJ45: Twisted-pair copper RJ45 connector interface

• No PoE suffix (V / V+ / UPOE), confirming no inline power output capability for connected endpoints.

Product Lifecycle Notice

• Official Global Release Year: 2009
• End-of-Sale (EoS) Announcement Date: Cisco formally discontinued manufacturing and new unit sales
• Minimum Supported IOS / IOS XE Version: Classic IOS SG train 12.2(44r)SG; IOS XE 3.2.0SG / 15.2(1)E and all subsequent maintenance releases
• End of Software Maintenance: No new feature code releases post-EoS; limited critical security patch support expired
• Final End-of-Support (EoSS) Date: Cisco formal hardware repair and TAC engineering support fully terminated
• Legacy Status: All datasheets, installation guides, IOS/IOS XE configuration manuals are archived on Cisco’s legacy networking documentation portal; only third-party refurbished hardware and limited best-effort aftermarket support are available.

Supported Chassis & Supervisor Compatibility

Compatible Chassis Platform

• Cisco Catalyst 4900M modular rack-mount chassis (only platform supporting WS-X49xx half-slot line cards)

Supported Supervisor Engines

All Catalyst 4500E-series E-type supervisor engines deployed inside Catalyst 4900M:

• WS-X45-SUP6-E
• WS-X45-SUP7-E / WS-X45-SUP7L-E
• WS-X45-SUP8-E / WS-X45-SUP8L-E

Critical Hardware Restrictions

1. This half-slot line cardcannot be installed in full-slot Catalyst 4503-E / 4506-E / 4507R-E / 4510R-E chassis(only Catalyst 4900M supports WS-X49xx modules).
2. Incompatible with legacy non-E supervisors (Supervisor II / IV / V) and classic Catalyst 4500 non-E chassis.

Standard Factory Complete Bundle Contents

Each factory-sealed WS-X4920-GB-RJ45 retail package contains all hardware and accessories required for chassis deployment:

1. WS-X4920-GB-RJ45 half-slot hot-swappable line card module
2. Chassis mounting retention screws for secure slot installation
3. Quick-start hardware installation guide for line card insertion/removal
4. Global regulatory compliance, safety, and electromagnetic interference (EMI) certification documentation packet

Supported Software & Enterprise Deployment Architectures

Compatible Cisco IOS Software

WS-X4920-GB-RJ45 supports two official OS branches for Catalyst 4900M platforms:

1. Classic IOS SG train: Minimum release 12.2(44r)SG and all subsequent maintenance SG releases
2. IOS XE train: Minimum release IOS XE 3.2.0SG / 15.2(1)E and all later IOS XE E-series releases Modern standalone IOS-XE switches and Catalyst 9000/9300/9400/9500 series firmware are incompatible with this legacy 4900M line card.

Supported Deployment Architectures

1. Small-Density Campus Access Layer Wiring Closet Aggregation Deployed in Catalyst 4900M compact rack switches to provide low-port-count Gigabit copper access for small office desktop workstations, auxiliary network printers, and local management appliances, supporting pure data traffic with enterprise-grade access security features.
2. Branch Office Compact Rack Converged Data Aggregation Space-efficient half-slot design ideal for small branch office rack deployments, used to aggregate non-powered endpoints such as file servers, backup storage gateways, and conference room desktop PCs alongside other half-slot fiber uplink modules in the same Catalyst 4900M chassis.
3. IP Surveillance & Building Management Auxiliary Port Aggregation Low-volume management link aggregation for fixed IP surveillance cameras, building automation controllers, and access control readers that do not require PoE power, isolated via private VLANs from core corporate data networks.
4. Unified Communications Supplementary Data Port Deployment Complementary data-only port expansion alongside PoE line cards in mixed-port-count Catalyst 4900M chassis deployments, dedicated to non-PoE auxiliary endpoints such as network monitoring probes and video conference room desktop PCs, integrated with CUCM voice QoS and OBTP video conference traffic prioritization.

Core Integrated Functional Capabilities: Half-slot hot-swappable design, 20-port auto-sensing 10/100/1000BASE-T copper forwarding, zero PoE inline power support, IEEE 802.3az Energy Efficient Ethernet, Layer 2 802.1Q VLAN trunking, jumbo frame support up to 9216 bytes, per-port hardware QoS queuing (8 queues per port managed by supervisor ASIC), IGMP v1/v2/v3 hardware snooping, EtherChannel/PAgP/LACP link aggregation, UDLD unidirectional link detection, broadcast/multicast storm control, private VLANs, hot-swappable module design, and full inheritance of all Catalyst 4500E supervisor engine unified communications and enterprise security feature sets.

2. Hardware & Performance Specifications

Core Switching & Forwarding Performance

• Switching Fabric Architecture: Centralized CenterFlex forwarding ASIC hosted on the installed Catalyst 4500E-series supervisor engine; line card acts as passive port interface without local switching ASICsCisco
• Port Buffer Allocation: Dedicated ingress/egress buffers per RJ45 port, buffer resources managed dynamically by the supervisor engine’s centralized memory controller
• Forwarding Performance: Wire-speed Layer 2 switching for all 20 Gigabit ports under non-oversubscribed load; hardware-assisted Layer 3 IPv4 forwarding, IPv6 software-switched forwarding (forwarding capabilities inherited from supervisor engine model)
• Maximum Supported Frame Size: Jumbo frames up to 9216 bytes, baby giant frames up to 1600 bytes for legacy Metro Ethernet deployments
• Aggregation Capacity: Supports EtherChannel / PAgP / IEEE 802.3ad LACP link aggregation across the 20 onboard ports, maximum 8 ports per logical EtherChannel bundle; cross-module EtherChannel supported with other half-slot WS-X49xx line cards in the same Catalyst 4900M chassis
• MTBF: 710,000 operating hours under standard indoor environmental conditions
• Max Power Consumption of Line Card: 18 Watts maximum rated power draw (no PoE power circuits, extremely low power footprint)

PoE Power Delivery Specifications

No PoE Capability: This half-slot line card contains zero inline power hardware, no power classification circuits, and cannot supply any DC power to connected endpoints (IP phones, wireless APs, surveillance cameras, etc.). All attached devices must rely on local AC power adapters for operation.

Front Panel Physical Port & Indicator Layout

1. Gigabit Copper Ports (20 × RJ45 10/100/1000BASE-T Data-Only Ports)
   • Port speed auto-negotiation: 10Mbps / 100Mbps / 1000Mbps full-duplex, half-duplex fallback support
   • No PoE power detection or output circuits; no power classification signaling
   • Per-port bi-color status LEDs: Green = link up / active bidirectional traffic, Amber = port administratively disabled, physical link down, or internal hardware fault
2. Module Global System Status Indicators
   • Global module health LED: Solid green = module detected and operational normal, solid red = critical line card hardware fault, flashing amber = module entering boot/diagnostic initialization mode
   • Hot-swap ejector levers with integrated locking retention tabs for safe module insertion/removal without chassis power shutdown
3. No Integrated Console or Management Ports – all chassis management interfaces are located on the front panel of the installed supervisor engine module.

Physical, Environmental & Power Specifications

Physical Dimensions & Weight

• Form Factor: Half-width hot-swappable line card for Catalyst 4900M chassis
• Overall Dimensions (H × W × D): 4.9 cm × 18.8 cm × 20.9 cm (1.9 x 7.4 x 8.2 in)baynetwork...
• Bare Line Card Net Weight: ~0.7 kg (700 grams)

Environmental Operating Specifications

• Operating Ambient Temperature Range: 0°C to 40°C (32°F to 104°F) standard data center / wiring closet indoor environment
• Storage & Transport Temperature Range: -40°C to 75°C (-40°F to 167°F)
• Operating Relative Humidity: 10% to 90%, non-condensing humidity for 24/7 continuous chassis operation
• Operating Altitude: -60 meters up to 3000 meters above sea level
• Acoustic Noise: No onboard cooling fans; all thermal dissipation via passive aluminum heatsinks; chassis main fan tray handles overall system thermal load
• Carrier-Grade Compliance: NEBS Level 3 (GR-1089-CORE, GR-63-CORE), ETSI ETS-300386-2, EN 50121-4
• Safety Certifications: UL 1950, EN 60950, CSA-C22.2 No.950, IEC 60950-1 2nd Edition

3. Supported Layer 2 / Layer 3 Protocol & Feature Set

Layer 2 Switching Features

• IEEE 802.1Q tagged VLAN trunking, maximum 4094 active concurrent VLANs (VLAN limit inherited from supervisor engine)
• Spanning Tree Protocol suite: IEEE 802.1D STP, 802.1w Rapid STP (RSTP), 802.1s Multiple STP (MSTP); UplinkFast, BackboneFast, root guard, BPDU guard
• Link Aggregation: IEEE 802.3ad LACP, Cisco PAgP, cross-module EtherChannel support with other WS-X49xx half-slot line cards
• Multicast Optimization: IGMP v1/v2/v3 hardware snooping, Cisco Group Multicast Protocol (GMP) server functionality
• Link Fault Detection: Unidirectional Link Detection (UDLD) and aggressive UDLD operating modes
• Security Layer 2 Features: Port security, MAC address learning limits, static secure MAC address binding, private VLANs with promiscuous trunk support, Q-in-Q VLAN stacking pass-through
• Energy Efficiency: IEEE 802.3az Energy Efficient Ethernet (EEE), automatic port power-down for idle link states to reduce chassis power consumption
• Traffic Suppression: Broadcast, multicast, unknown unicast storm control (software rate-limiting managed by supervisor engine)
• Misc Layer 2: Cisco Discovery Protocol (CDP), Layer 2 protocol tunneling (L2PT), CoS mutation for trunk ports.

Layer 3 Routing Features

• IPv4 Hardware Forwarding: Static routing, default static routes, EIGRP stub routing support, IP unnumbered SVI interfaces, SVI autostate exclude (Layer 3 forwarding capacity inherited from installed supervisor engine model)
• IPv6 Forwarding: Software-switched IPv6 packet forwarding (no dedicated local IPv6 hardware ASIC on the line card)
• Access Control Lists: Hardware-based Port ACLs (PACLs), VLAN ACLs (VACLs), Router ACLs (RACLs) with zero forwarding latency, ACL processing executed on the supervisor engine centralized ASIC
• WCCP Version 2 Layer 2 redirect support for web cache offloading.

QoS Traffic Management Features

• Hardware Per-Port QoS Architecture: 8 independent egress hardware queues per RJ45 port, queuing resources managed dynamically by the supervisor engine’s centralized forwarding ASIC
• Traffic Classification Mechanisms: Layer 2 CoS marking, Layer 3 DSCP / IP Precedence classification, full Layer 3/Layer 4 ACL header matching for granular application traffic identification
• Policing & Shaping: 512 independent ingress policer instances, 512 independent egress policer instances; aggregate and per-flow policing modes, egress traffic shaping and bandwidth sharing
• Congestion Avoidance: Dynamic Buffer Limiting (DBL) to prevent egress buffer overflow and random packet loss for bursty enterprise application traffic
• Scheduling Algorithms: Strict priority queuing for real-time voice/video media traffic, weighted round-robin (WRR) shared queue scheduling for standard data traffic
• Unified Communications QoS: Auto-QoS CLI template for simplified VoIP and TelePresence deployment, per-port/per-VLAN CoS/DSCP marking and mutation for converged voice-data network environments.

Enterprise Security Features

• IEEE 802.1X port-based Network Access Control (NAC) fully compatible (NAC authentication processing executed on the supervisor engine)
• DHCP Snooping with DHCP Option 82 insertion to block rogue DHCP server attacks and prevent IP address spoofing
• Dynamic ARP Inspection (DAI) for Layer 2 ARP spoofing and man-in-the-middle attack prevention
• Encrypted management traffic support: AES encryption for SSH v2 remote CLI access, TLS 1.1/1.2 for HTTPS web administration (all security processing handled by the chassis supervisor engine)
• Cisco TrustSec identity-based network access tagging support (TrustSec hardware feature set inherited from supervisor engine).

High Availability Redundancy Features

• Hot-swappable half-slot line card design: Insert, remove, or replace the module without powering down the entire Catalyst 4900M chassis; all other active line card ports remain fully operational during module replacement
• Stateful Switchover (SSO) and Non-Stop Forwarding (NSF) fully compatible (requires dual redundant supervisor engines installed in the Catalyst 4900M chassis); line card Layer 2 MAC address tables and forwarding state are synchronized between redundant supervisors for subsecond failover with zero data-plane traffic outage.

4. Network Security & QoS Compliance Standards

1. Dual-stack IPv4 / IPv6 network protocol support; DHCP dynamic IP addressing or static IP configuration managed via chassis supervisor engine
2. Enterprise Network Access Security Controls: IEEE 802.1X EAP-TLS/EAP-PEAP wired authentication, multi-level local administrator password access control, role-based access control (RBAC) for web-based device management portal
3. Remote Administration Security Protocols: Encrypted SSH v2 secure shell CLI remote access, HTTPS TLS 1.1 / TLS 1.2 encrypted web management portal, XML/SOAP encrypted remote API interfaces for third-party network monitoring systems
4. Digital Identity Certificate Support: Manufacturer-Installed Certificates (MIC), Locally Significant Certificates (LSC), and X.509 DER/Base64 digital identity certificates for secure TLS authentication to TACACS+/RADIUS AAA servers
5. QoS Traffic Prioritization Compliance: IEEE 802.1Q VLAN tagging for logical segmentation of voice/media traffic and enterprise data traffic; IEEE 802.1p Layer 2 CoS marking to prioritize real-time VoIP and TelePresence video conference streams above standard office data packets, eliminating media latency and packet loss artifacts.

5. Unified Communications & Network Automation Feature Set

Core Enterprise Unified Communications & Meeting QoS Feature Set

1. Supported Unified Communications Deployment Scenarios:
   • Small campus access layer Gigabit copper data aggregation for non-PoE auxiliary endpoints alongside PoE line cards
   • Compact branch office rack workstation and local server converged data aggregation
   • IP surveillance and building automation low-volume management link aggregation
2. Complete Voice & Video Call QoS Control Operations:
   • Auto-QoS template automatic CoS/DSCP marking for VoIP media packets on all copper access ports
   • Strict priority egress queue scheduling to guarantee low-latency transport for TelePresence video conference traffic
   • Per-port ingress policing to limit rogue voice/video stream bandwidth consumption and protect mission-critical media traffic
   • OBTP (One Button To Push) calendar-scheduled meeting dynamic QoS policy activation; line card automatically prioritizes video conference traffic during pre-booked enterprise TelePresence meetings
3. Directory & Network Log Management Capabilities:
   • LDAP corporate directory lookup compatibility integrated with Cisco Unified Communications Manager (CUCM) and Cisco TelePresence Management Suite (TMS)
   • Persistent local switch logging storage on supervisor engine onboard flash memory; remote syslog server export for centralized enterprise network audit tracking
4. Supplementary Unified Communications Features: Integrated visual voicemail indicator support for IP phone endpoints, single number reach mobility feature support, ad-hoc point-to-point video conference traffic prioritization; URI dialing support for SIP video endpoints, RFC 4733 DTMF tone transmission for analog PSTN gateway integration; NTP network time synchronization for accurate meeting log timestamps, DNS service discovery, automatic gatekeeper discovery for legacy H.323 TelePresence endpoint interoperability.

Intelligent Network Workflow Automation Functions

1. OBTP Scheduled Meeting QoS Sync: When enterprise video conferences are scheduled via Microsoft Outlook/Google Calendar and launched from Cisco TelePresence endpoints connected to the Catalyst 4900M switch, the WS-X4920-GB-RJ45 line card automatically applies high-priority QoS policies to all auxiliary copper data ports carrying conference media traffic without manual administrator configuration
2. Automatic System Hardware Fault Monitoring: Continuous real-time monitoring of line card internal temperature, port physical link status, RJ45 transceiver fault conditions; automated SNMP trap alert generation sent to enterprise network monitoring servers for hardware failure pre-alerting
3. Multi-Platform Meeting Interoperability: Native certified support for Cisco Webex Meetings traffic QoS prioritization, all third-party standards-compliant SIP/H.323 video conferencing endpoints without requiring auxiliary external AV switching hardware or third-party media bridge equipment
4. Multi-Mode Device Control Interfaces: Full Catalyst 4900M chassis and line card function control via three independent user interface methods:
   • Local RJ-45 console CLI (primary local administrator control method for all switch configuration and troubleshooting functions, located on chassis supervisor engine front panel)
   • Remote HTTPS encrypted web administration portal for off-site enterprise IT administrator full chassis configuration and real-time port/route status monitoring
   • Bidirectional SNMP v2c / v3 MIB control integration for third-party enterprise network monitoring automation systems (SolarWinds, PRTG, Zabbix)
5. Third-Party Enterprise Network Monitoring Automation Integration: Supports SNMP trap notification linkage with third-party network monitoring platforms, standardized MIB object libraries for chassis resource utilization tracking, fully customizable automation macros for scheduled switch configuration backup, IOS/IOS XE image upgrade scheduling, and routine port status audit workflows
6. Digital Signage Kiosk Standby Mode QoS: Configurable automatic QoS policy adjustment for connected digital signage kiosk endpoints during off-hours non-meeting periods, lowering signage traffic priority to reserve uplink fiber bandwidth for critical enterprise voice and video conference traffic.

6. Supported Enterprise Compatibility Platforms

1. On-Premises Unified Communications Architecture: Cisco Unified Communications Manager (CUCM) version 8.x, 9.x, 10.x stable official software releases with dedicated Catalyst 4900M compact switch voice VLAN and QoS compatibility configuration templates, integrated with Cisco Unified Presence (Jabber IM/presence synchronization) and Cisco TelePresence Management Suite (TMS) for enterprise-wide IP phone and video conference endpoint full-lifecycle management
2. Remote Access & Cloud Hybrid Architecture: Cisco TelePresence Expressway-C / Expressway-E cross-firewall traversal gateways for secure off-site remote TelePresence endpoint registration across corporate network fiber infrastructure; native support for Cisco WebEx cloud meeting platform and Cisco TelePresence Management Suite (TMS) centralized on-premises device management portal
3. Third-Party Interoperability Compliance: Fully standards-compliant SIP RFC signaling protocol, H.323 and H.460 firewall traversal communication protocols, compatible with all industry-standard third-party video conferencing platforms, IP PBX telephone systems and multi-vendor TelePresence endpoint hardware from competing collaboration vendors, as well as all third-party enterprise network monitoring and SNMP management platforms.

7. Core Deployment Advantages of Cisco WS-X4920-GB-RJ45 Line Card

1. Compact half-width hot-swappable design exclusive to Catalyst 4900M chassis, enabling flexible mixed-port-density deployments combining this 20-port Gigabit copper data-only module with other half-slot fiber uplink line cards in a single compact rack-mount chassis, ideal for space-constrained small branch offices and wiring closets
2. Zero PoE power circuit design delivers ultra-low chassis power consumption (only 18W max module draw), reducing overall rack power load and cooling requirements when deployed alongside power-hungry PoE line cards in the same Catalyst 4900M chassis
3. Centralized CenterFlex forwarding architecture inherits all advanced Layer 2/Layer 3, QoS, and security features directly from the installed supervisor engine, eliminating the need for separate ASIC feature licensing on the line card itself and delivering exceptional long-term investment protection via simple supervisor engine firmware upgrades
4. Full hot-swappable operation allows IT administrators to replace or add this line card to the Catalyst 4900M chassis without shutting down the entire switch, minimizing enterprise network maintenance downtime and supporting 24/7 always-on business network requirements
5. Pure data-only port layout optimized for non-powered enterprise endpoints such as desktop workstations, file servers, IP surveillance management links, and building automation controllers, eliminating unnecessary PoE hardware costs for deployments that do not require inline power delivery
6. Passive heatsink thermal design produces zero audible operational noise from the line card module itself; all cooling load is handled by the chassis main fan tray, making WS-X4920-GB-RJ45 perfectly suited for quiet office wiring closet and executive campus network closet environments where noisy active-cooled line card modules create disruptive background distractions
7. Full backward compatibility with all generations of Catalyst 4500E-series E-type supervisor engines for Catalyst 4900M chassis, fully interoperable with existing enterprise CUCM/VCS/TMS on-premises unified communications infrastructure, enabling cost-effective low-port-density data access line card hardware replacement without full chassis refresh investment
8. Centralized mass Gigabit Ethernet wired LAN device fleet management via CUCM, TMS or VCS simplifies bulk IOS/IOS XE firmware batch upgrades, batch standardized enterprise security/QoS policy template deployment, real-time distributed headquarters/branch office Catalyst 4900M chassis hardware health monitoring and remote IT administrator troubleshooting, drastically reducing daily enterprise IT administration workload for large-scale distributed global corporate headquarters and regional branch office network fleets.

8. Supplementary Product Specification Notes

SKU / Model Naming Recap

• WS-X4920-GB-RJ45: Cisco Catalyst 4900M Series half-slot 20-port 10/100/1000BASE-T Gigabit Ethernet RJ45 data-only hot-swappable modular line card, centralized CenterFlex forwarding architecture managed by Catalyst 4500E-series supervisor engines, zero PoE inline power support, IEEE 802.3az Energy Efficient Ethernet, compatible exclusively with Catalyst 4900M modular chassis and E-series Catalyst 4500E supervisor engines, universal 100–240V AC chassis power input compatible, K9 secure IOS/IOS XE firmware compliant with AES encrypted management traffic and full enterprise NAC security policy support for small-density campus and branch office low-port-count data endpoint deployments.
• K9 Compliance Note: All factory WS-X4920-GB-RJ45 IOS/IOS XE firmware releases implement H.235v3 AES 128-bit encrypted remote CLI, web portal and SNMP management traffic, meeting Cisco K9 secure network hardware classification standards required for government, military, healthcare, and financial regulated enterprise campus and branch office network deployments.
• NR Variant Note: No separate RF-restricted NR cellular radio variant exists for WS-X4920-GB-RJ45; the line card contains no integrated cellular mobile radio signal generation or transmission modules, all network connectivity is delivered exclusively via RJ45 copper data ports only.

Regulatory Compliance Certifications

Fully compliant with global international industry certification standards including EU Low-Voltage Directive 2014/35/EU (IEC/EN 60950-1), EMC Electromagnetic Compatibility Directive 2004/108/EC, UL 60950-1 safety certification, CAN/CSA-C22.2 No. 60950-1, FCC CFR 47 Part 15 Class B electromagnetic emissions certification for office IT networking equipment, NEBS Level 3 carrier-grade compliance, ETSI ETS-300386-2, EN 50121-4, and global RoHS5 hazardous substance restriction compliance approval.

Factory Hardware Warranty Terms

Standard 1-year limited hardware warranty coverage for brand-new factory-sealed complete WS-X4920-GB-RJ45 line card modules purchased through official Cisco authorized global distribution channel partners. Critical lifecycle limitation note: The product EoS/EoSS status restricts active hardware replacement warranty service eligibility for all WS-X4920-GB-RJ45 units purchased after Cisco’s official End-of-Sale cutoff date; all formal Cisco technical TAC engineering hardware repair support services terminated permanently at the published End-of-Support date.

UNSPSC Classification Code

43222612 (Half-slot hot-swappable modular enterprise LAN switch line card exclusive to Catalyst 4900M chassis, 20-port 10/100/1000BASE-T Gigabit RJ45 data-only low-density access layer interfaces, centralized supervisor-managed CenterFlex forwarding architecture, zero PoE inline power delivery, hardware QoS and enterprise NAC access security feature support, AES encrypted network management traffic, compatible with all E-series Catalyst 4500E supervisor engines for compact rack-mount small office and branch office switch chassis deployments).