Cisco HWIC-1T Full Official Product Description
1. Part Number & Naming Definition
Official Full Name
Cisco 1-Port Serial High-Speed WAN Interface Card
Formal spare SKU:HWIC-1T=
Naming Breakdown
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HWIC: High-Speed WAN Interface Card
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1T: Single synchronous/asynchronous serial port
Core Product Positioning
The Cisco HWIC-1T is a pluggable high-speed serial WAN interface card designed for Cisco ISR integrated service routers. It delivers flexible synchronous and asynchronous serial connectivity for traditional leased-line WAN links, legacy industrial communication, remote backup circuits and point-to-point data connections. It adopts the HWIC hardware bus with improved throughput compared to legacy WIC series cards, supporting multi-type serial physical interfaces via separate smart serial cables.
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 routers (WIC slot only), ISR 4000/9000 series, Catalyst switches
Supported IOS Firmware
Minimum IOS 12.4(11)T; fully validated on 12.4T, 15.0, 15.1, 15.2(4)M and later mainline releases
3. Physical & Electrical Technical Specifications
Form Factor
HWIC plug-in module, occupies one single HWIC slot on host router
Front Panel Interface
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1 × DB-60 Smart Serial connector
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LED indicator: LINK status light
Port Rate Capability
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Synchronous mode: Up to 8 Mbps
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Asynchronous mode: Up to 115.2 kbps
Supported Serial Electrical Standards
Supports external Smart Serial cables for multiple interface types: V.35, EIA/TIA-232, EIA/TIA-449, EIA/TIA-530, EIA/TIA-530A, X.21
Clock Mode
Configurable DTE or DCE operation (clock source controlled by cable and router configuration)
Power Consumption
Typical power draw: 4.5 W
Environmental 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 Protocols
HDLC, PPP, Frame Relay, LAPB, SDLC for legacy mainframe and industrial applications
Routing Support
Static routing, RIP, EIGRP, OSPF over serial interfaces
Traffic Functions
Interface keepalives, CIR shaping, serial QoS queueing, loopback diagnostics, BERT bit error testing
Management Features
SNMP monitoring, interface statistics, syslog event logging, local CLI configuration
Deployment Modes
Point-to-point leased line interconnection, disaster recovery backup links, industrial control serial transport, legacy mainframe SDLC aggregation
5. Typical Enterprise Deployment Scenarios
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Remote branch serial leased-line connectivity to headquarters
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Secondary backup WAN circuit for enterprise internet and inter-site links
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Industrial network connection for factory control systems and substation communication
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Legacy mainframe and SDLC device aggregation
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Metro point-to-point Frame Relay service access
6. Regulatory & Compliance Certifications
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Safety: UL 60950-1, CSA C22.2 No.60950-1, IEC/EN 60950-1
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EMC: CE Mark, FCC Part 15 Class A, ICES-003 Class A, VCCI Class A
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Environmental: EU RoHS 2.0 compliant, EU WEEE compliant
7. Standard Factory Package Contents
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Cisco HWIC-1T 1-port serial HWIC module
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Hardware installation guide
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Safety and regulatory documentation
Note: Smart Serial interface cable is sold separately and not included.
End-of-Life Status Note
The Cisco HWIC-1T has reached Cisco End-of-Sale (EoS). Official software maintenance and new hardware production are discontinued. Recommended migration replacement: NIM-1T for ISR 4000 series routers.
UNSPSC Classification Code
43222608 – Cisco HWIC-1T single-port synchronous/asynchronous serial High-Speed WAN Interface Card for Cisco ISR 1841/2800/2900/3800/3900 integrated services routers, supporting V.35/X.21/EIA serial standards, HDLC/PPP/Frame Relay protocols for leased-line WAN, industrial and legacy serial networking deployments.
Standard Hardware Warranty
Brand-new modules carry a 1-year limited factory hardware warranty covering manufacturing defects. Refurbished inventory follows supplier warranty terms.
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