Cisco HWIC-2T Full Official Product Description
1. Part Number & Naming Definition
Official Full Name
Cisco 2-Port Synchronous / Asynchronous Serial High-Speed WAN Interface Card
Spare SKU:HWIC-2T=
Naming Breakdown
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HWIC: High-Speed WAN Interface Card
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2T: Dual synchronous/asynchronous serial ports
Core Product Positioning
The Cisco HWIC-2T is a hot-pluggable high-speed serial WAN interface card designed for Cisco ISR integrated service routers. It delivers dual-port flexible serial connectivity for leased-line WAN services, legacy industrial communication links, backup inter-site circuits and point-to-point data connections. The HWIC bus architecture provides superior throughput compared to older WIC series modules. Multiple physical interface standards are supported by deploying separate Smart Serial cables, enabling versatile migration and legacy network integration.
2. Hardware Compatibility & Supported IOS Releases
Supported Router Platforms
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Cisco 1841
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Cisco 2800 Series: 2801, 2811, 2821, 2851
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Cisco 2900 Series: 2901, 2911, 2921, 2951
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Cisco 3800 Series: 3825, 3845
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Cisco 3900 Series: 3925, 3945
Unsupported Platforms
1700/2600/3600 legacy routers, ISR 4000 / ISR 9000 series, Catalyst Ethernet switches
Supported IOS Firmware
Minimum IOS 12.4(11)T; Fully validated on 12.4T, 15.0, 15.1, 15.2(4)M and subsequent mainline releases
3. Physical & Electrical Technical Specifications
Form Factor
Single-wide HWIC pluggable module, occupies one HWIC expansion slot on host router
Front Panel Interfaces
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2 × DB-60 Smart Serial connectors
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Independent LINK status LED indicators for each serial port
Port Speed Performance
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Synchronous mode: Up to 8 Mbps per port
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Asynchronous mode: Up to 115.2 kbps per port
Supported Serial Electrical Interfaces
Works with Smart Serial cables to support: V.35, EIA/TIA-232, EIA/TIA-449, EIA/TIA-530, EIA/TIA-530A, X.21
Clock Operation
Configurable DTE or DCE clock mode, clock source determined by cable type and router configuration
Power Consumption
Typical power draw: 5.2 W
Environmental Operating Parameters
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Operating temperature: 0°C to 40°C (32°F – 104°F)
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Storage temperature: -40°C to 70°C (-40°F – 158°F)
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Relative Humidity: 5% – 85% non-condensing
4. Key Protocol & Networking Feature Set
WAN Data Link Encapsulations
HDLC, PPP, Multilink PPP, Frame Relay, LAPB, SDLC, Bisync for mainframe and industrial workloads
Routing Protocols
Static routing, RIP, EIGRP, OSPF operable over serial interfaces
Traffic & Diagnostic Functions
Interface keepalives, traffic policing and shaping, serial QoS queuing, local loopback testing, BERT bit error rate testing
Management Capabilities
Real-time interface statistics, syslog event reporting, SNMP monitoring, full IOS CLI configuration access
5. Typical Enterprise Deployment Use Cases
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Dual serial leased-line interconnection between enterprise headquarters and branch offices
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Multi-circuit redundant backup WAN links for disaster recovery architecture
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Industrial site communication for power substations, factory control infrastructure
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Legacy mainframe SDLC protocol aggregation and access
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Metro-area point-to-point Frame Relay service termination
6. Regulatory & Compliance Certifications
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Safety Standards: UL 60950-1, CSA C22.2 No.60950-1, IEC/EN 60950-1
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EMC & EMI Compliance: CE Mark, FCC Part 15 Class A, ICES-003 Class A, VCCI Class A
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Environmental Directives: EU RoHS 2.0 compliant, EU WEEE compliant
7. Standard Factory Package Contents
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Cisco HWIC-2T dual-port serial HWIC module
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Hardware installation guide
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Safety and regulatory documentation
Important Note: Smart Serial interface cables are sold separately and not included.
End-of-Life Status Note
Cisco HWIC-2T has reached Cisco End-of-Sale (EoS). Official Cisco firmware maintenance and new hardware production are discontinued. Recommended migration replacement: NIM-2T for ISR 4000 series routers.
UNSPSC Classification Code
43222608 – Cisco HWIC-2T dual-port synchronous/asynchronous serial High-Speed WAN Interface Card for Cisco ISR 1841/2800/2900/3800/3900 integrated services routers, supporting multiple serial physical standards, HDLC/PPP/Frame Relay encapsulations for leased-line WAN, industrial and legacy serial networking deployments.
Standard Hardware Warranty
Brand-new modules include a 1-year limited factory hardware warranty covering manufacturing defects. Refurbished inventory follows supplier warranty terms.
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