Cisco HWIC-4T Cisco network interface module
Brand: Cisco | Category: Accessories & Components
SKU: CSC-HWIC-4T | Part #: HWIC-4T | MPN: HWIC-4T
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About the Cisco HWIC-4T Cisco network interface module
The Cisco HWIC-4T is a High-Speed WAN Interface Card that integrates into Cisco ISR (Integrated Services Router) platforms to deliver serial connectivity across distributed enterprise networks. This four-port serial module enables network engineers and infrastructure teams to extend WAN capabilities without replacing core routing hardware, making it essential for organizations standardizing on Cisco's modular ISR architecture.
The HWIC-4T module occupies a single HWIC slot within compatible Cisco routers and provides 4 Smart Serial ports, each supporting multiple electrical standards including EIA/TIA-232, EIA/TIA-449, V.35, X.21, EIA-530, and EIA-530A. The module operates in both DTE and DCE modes and handles industry-standard encapsulations: HDLC, PPP, Frame Relay, and SLIP. Power is supplied directly by the host router chassis, eliminating the need for external power supplies. Cisco IOS support is integrated natively on supported ISR platforms. All four ports require external cable adapters and meet applicable FCC, CE, and UL regulatory standards for deployed networking equipment.
Compatible Platforms & Deployment Scenarios
- Cisco 1841, 2801, 2811, 2821, and 2851 series routers for branch office WAN consolidation
- Cisco 3825 and 3845 ISR platforms supporting high-density serial connectivity in regional data centers
- Legacy serial protocol migration and multi-carrier WAN aggregation across Frame Relay and PPP networks
- Point-to-point leased-line and X.21 circuit termination in hybrid WAN environments
- Industrial and telecom applications requiring simultaneous DTE and DCE mode support on separate ports
The HWIC-4T module (Cisco part number HWIC-4T) is genuine Cisco hardware required for Cisco TAC case validation and technical support eligibility. For pricing, availability, and procurement support, please submit your requirements to Omnixon Global via RFQ.
Technical Specifications
| Brand | Cisco |
| Category | Accessories & Components |
| SKU | CSC-HWIC-4T |
| Part Number | HWIC-4T |
| Condition | New |
| Interface | 4x Serial |
| Manufacturer Part Number | HWIC-4T |
| Product Series | HWIC (High-Speed WAN Interface Card) |
| Number of Serial Ports | 4 |
| Interface Type | Smart Serial (requires external cable adapter per port) |
| Supported Electrical Standards | EIA/TIA-232, EIA/TIA-449, V.35, X.21, EIA-530, EIA-530A |
| DTE/DCE Support | Both DTE and DCE modes supported |
| Encapsulations Supported | HDLC, PPP, Frame Relay, SLIP |
| Form Factor | HWIC (High-Speed WAN Interface Card) |
| Compatible Platforms | Cisco 1841, 2801, 2811, 2821, 2851, 3825, 3845 ISR |
| Slots Consumed | 1 HWIC slot |
| Power Source | Powered by host router chassis |
| Cisco IOS Support | Integrated within Cisco IOS on supported ISR platforms |
| Product Type | WAN Interface Module |
| TAC Support Requirement | Genuine Cisco hardware required for Cisco TAC case validation |
| Regulatory Compliance | Meets applicable FCC, CE, and UL standards for installed networking equipment |
Frequently Asked Questions about Cisco HWIC-4T Cisco network interface module
What does the Cisco HWIC-4T Cisco network interface module do?
The Cisco HWIC-4T Cisco network interface module is enterprise IT hardware deployed in production data centers, server rooms, and edge sites across the GCC and EMEA region.