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HWIC-4A/S
4-Port Async/Sync Serial HWIC Cisco Router High-Speed WAN In...
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HWIC-4A/S is a high-performance WAN module engineered for reliable high-speed connectivity in enterprise and service provider environments. Designed with a robust modular form factor, this card supports data rates up to 1Gbps via an RJ-45 connector and is fully compatible with leading router platforms, ensuring seamless integration into existing network infrastructures while supporting protocols such as TCP/IP and iSCSI.
This HWIC module is optimized for scenarios including upgrading router network interfaces and expanding the capacity of data centers. It installs in enhanced HWIC (EHWIC) slots and features advanced networking capabilities like auto-negotiation, jumbo frames, and QoS, making it an ideal solution for high-speed WAN connectivity in demanding operational environments.
HWIC-4A/S price is $578.00, a 66% saving from the Cisco list price of $1,700.00. HWIC-4A/S is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for HWIC-4A/S for additional pricing. Browse the full Router Ehwic Wan Cards series or explore all Cisco products.
Scenario: A national retail chain leverages the Cisco HWIC-4A/S-4-Port Async/Sync Serial HWIC High-Speed WAN Interface card in ISR routers to terminate four fractional T1/E1 circuits per location, aggregating up to 8 Mbps of resilient WAN bandwidth. This modular interface card consolidates connectivity, reduces chassis count and accelerates deployment. Outcome: 40 % smaller hardware footprint, seamless provisioning, and SLA-driven scalability for high-availability branch networks.
Scenario: A utility operator installs the Cisco HWIC-4A/S-4-Port Async/Sync Serial HWIC High-Speed WAN Interface card on remote-site routers to support synchronous serial SCADA telemetry and host asynchronous dial-up modems for automatic failover. By combining sync and async ports in a single card, the solution streamlines site rollouts and minimizes points of failure. Outcome: Deterministic data delivery, instant backup activation, and 99.99 % uptime for mission-critical operations.
Scenario: A manufacturing plant deploys the Cisco HWIC-4A/S-4-Port Async/Sync Serial HWIC High-Speed WAN Interface card on ISR routers to directly onboard PLCs, HMIs and barcode scanners via four async serial ports—eliminating separate terminal servers. Centralized policy enforcement and secure WAN transport unify device management. Outcome: 25 % reduction in cabling complexity, improved maintenance efficiency, and standardized security compliance across the industrial network.
To get the detailed certification, please go to the Compliance Center.
 HWIC-4A/S |  HWIC-1ADSL-M |  EHWIC-4G-LTE-JP |  HWIC-1DSU-T1 |  HWIC-3G-GSM | |
|---|---|---|---|---|---|
| Product Type | Network Module | Network Module | Network Module / Network Card | WAN Module | Network Module |
| Module Type | WAN | WAN | 4G LTE | WAN | WAN |
| Data Rate | 1Gbps | ADSL/ADSL2+ | N/A | N/A | N/A |
| Connector Type | RJ-45 | RJ-11 | N/A | RJ-45 | N/A |
| Supported Protocols | TCP/IP, iSCSI | TCP/IP, PPP | LTE, TCP/IP | N/A | TCP/IP |
| Form Factor | Modular | Modular | EHWIC | Modular | Modular |
| Operating Temperature | 0 to 70°C | 0 to 55°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Storage Temperature | -40 to 85°C | -40 to 85°C | N/A | -40 to 85°C | -40 to 85°C |
| Input Voltage | 3.3V | 3.3V | N/A | 3.3V | 3.3V |
| Compatibility | Cisco | Cisco | Cisco | Cisco | Cisco |
| Max Speed | 1Gbps | Up to 8Mbps downstream / 1Mbps upstream | N/A | N/A | N/A |
| Supported Features | Auto-negotiation, Jumbo Frames, QoS | N/A | Auto-negotiation, LTE Network Selection | N/A | N/A |
| Power Consumption | 5W | N/A | N/A | N/A | N/A |
| Interface Ports | Ethernet | N/A | LTE | N/A | N/A |
| Expansion Slots | EHWIC | EHWIC | EHWIC | EHWIC | EHWIC |
| Product Name | HWIC-4A/S | HWIC-1ADSL-M | EHWIC-4G-LTE-JP | HWIC-1DSU-T1 | HWIC-3G-GSM |
| Height | N/A | N/A | N/A | N/A | N/A |
| Width | N/A | N/A | N/A | N/A | N/A |
| Depth | N/A | N/A | N/A | N/A | N/A |
| Weight | N/A | N/A | N/A | N/A | N/A |
The HWIC-4A/S provides solid performance for serial connectivity. It's easy to set up and integrates perfectly with our existing router.
We use the HWIC-4A/S for serial communication. It works reliably, and installation was straightforward.
The HWIC-4A/S is a dependable solution for our serial network connections. It's been running smoothly with no issues.
This card provides excellent serial connectivity. The HWIC-4A/S has improved our network's reliability and made configuration easy.
The HWIC-4A/S offers solid, reliable performance. It's a great solution for expanding our serial communication capabilities.
The Cisco HWIC-4A/S is a High-Speed WAN Interface Card that provides four asynchronous or synchronous serial ports for Cisco ISR routers, enabling reliable WAN connectivity.
The HWIC-4A/S is fully compatible with Cisco 1800, 2800 and 3800 ISR series routers that feature a High-Speed WAN Interface Card slot.
Each serial port on the HWIC-4A/S supports data rates from 56 Kbps up to 2.048 Mbps for synchronous mode and up to 115.2 Kbps for asynchronous mode.
Yes. Each of the four ports on the HWIC-4A/S can be individually configured for synchronous or asynchronous operation to suit diverse network requirements.