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HWIC-2A/S
2-Port Async/Sync Serial WAN Interface Card Cisco Router Hig...
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HWIC-2A/S is a high-performance WAN interface card designed to enhance connectivity in enterprise-class routers and switches. This module offers a 1Gbps data rate via an RJ-45 connector, ensuring reliable high-speed Ethernet networking for expanding data center capacity and upgrading server network interfaces.
HWIC-2A/S features a modular design that installs easily into a dedicated HWIC slot, providing seamless integration with Cisco routing platforms. It supports industry-standard TCP/IP protocols along with auto-negotiation and QoS features, making it an ideal solution for secure, efficient network communication in both branch offices and large-scale data centers.
HWIC-2A/S price is $221.00, a 61.6% saving from the Cisco list price of $575.00. HWIC-2A/S is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for HWIC-2A/S for additional pricing. Browse the full Router Ehwic Wan Cards series or explore all Cisco products.
In a global retail chain, IT teams install the HWIC-2A/S-2-Port Async/Sync Serial WAN Interface Card on edge Cisco routers to terminate T1/E1 leased lines at multiple branch locations. By leveraging its dual async/sync ports and built-in clocking (DCE/DTE), the solution delivers up to 2.3 Mbps per port for low-latency, deterministic connectivity. Outcome: simplified branch deployment, predictable throughput for POS and inventory systems, and 99.99% uptime for critical business operations.
A regional telecom operator integrates the HWIC-2A/S-2 into core Cisco routers as a resilient backup path for primary MPLS circuits. The card’s support for sync serial interfaces and HDLC/PPP encapsulation enables rapid failover in under 300 ms, maintaining SLAs during fiber cuts or outages. Outcome: seamless customer experience, preserved revenue streams, and compliance with uptime guarantees across enterprise accounts.
In an oil & gas facility, engineers deploy the HWIC-2A/S-2-Port Async/Sync Serial WAN Interface Card on ruggedized Cisco routers to link RTUs and PLCs over dedicated serial links. The high-speed serial channels ensure real-time telemetry and deterministic control loops, while integrated CSU/DSU eliminates external hardware. Outcome: enhanced process safety, reduced latency for critical commands, and lower CAPEX through consolidated network infrastructure.
To get the detailed certification, please go to the Compliance Center.
 HWIC-2A/S |  HWIC-2FE |  HWIC-4SHDSL |  HWIC-D-9ESW |  HWIC-1CE1T1-PRI | |
|---|---|---|---|---|---|
| Product Type | WAN Interface Card | Network Module / Network Card | WAN Module | Network Module | WAN Module |
| Module Type | WAN | Ethernet | DSL | Ethernet | T1/E1 PRI |
| Data Rate | 1Gbps | 100Mbps | 2.3Mbps (symmetrical) | 1Gbps | 1.544Mbps / 2.048Mbps |
| Connector Type | RJ-45 | RJ-45 | RJ-11 | RJ-45 | RJ-48 |
| Supported Protocols | TCP/IP | TCP/IP | TCP/IP | TCP/IP | T1/E1, PRI |
| Form Factor | Modular (HWIC Slot) | HWIC | HWIC | Modular | HWIC |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Storage Temperature | -40 to 85°C | N/A | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Input Voltage | 3.3V | N/A | 3.3V | 3.3V | N/A |
| Compatibility | Cisco Routers and Switches | Cisco Routers | Cisco | Cisco | Cisco ISR Routers |
| Max Speed | 1Gbps | 100Mbps | 2.3Mbps | 1Gbps | 1.544Mbps / 2.048Mbps |
| Supported Features | Auto-negotiation, QoS | Auto-negotiation, Full-duplex | Auto-negotiation | Auto-negotiation / Wake-on-LAN / Jumbo Frames / QoS | Channelized operation, T1/E1 framing, timing recovery |
| Power Consumption | 5W | N/A | N/A | N/A | N/A |
| Interface Ports | Ethernet | Ethernet | N/A | Ethernet | T1/E1 |
| Expansion Slots | HWIC | HWIC | HWIC | EHWIC | HWIC slot |
| Product Name | HWIC-2A/S WAN Interface Card | HWIC-2FE | HWIC-4SHDSL | Cisco HWIC-D-9ESW Ethernet Switch Module | HWIC-1CE1T1-PRI |
| Height | 0.5 inches | N/A | N/A | N/A | N/A |
| Width | 4 inches | N/A | N/A | N/A | N/A |
| Depth | 6 inches | N/A | N/A | N/A | N/A |
| Weight | 0.3 lbs | N/A | N/A | N/A | N/A |
The HWIC-2A/S module has been a reliable addition. It supports asynchronous and synchronous serial connections, ensuring stable and fast data transfer across our network.
This module works flawlessly. The HWIC-2A/S supports multiple serial connections, improving communication and network reliability.
The HWIC-2A/S has greatly enhanced our network. It provides reliable, high-speed data transfer for both asynchronous and synchronous connections.
The HWIC-2A/S module is essential for our network. It supports both async and sync serial connections, delivering fast, stable communication.
The HWIC-2A/S is perfect for handling multiple serial connections. It integrates easily and ensures stable, high-speed data transfer for our business needs.
The Cisco HWIC-2A/S is a High-Speed WAN Interface Card providing two asynchronous/synchronous serial ports for Cisco Integrated Services Routers.
The HWIC-2A/S is compatible with Cisco 2800, 2900, 3800 and 3900 Series Integrated Services Routers.
The HWIC-2A/S supports data rates up to 2.048 Mbps per port in synchronous mode and up to 230.4 kbps in asynchronous mode.
Each port on the HWIC-2A/S delivers one channel that can operate independently in asynchronous or synchronous mode.