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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.
Yes, both ports on the HWIC-2A/S can be configured independently for asynchronous and synchronous serial traffic.
The HWIC-2A/S supports both internal and external clocking, enabling flexibility for DCE and DTE connections.
No, the HWIC-2A/S must be installed or removed only when the router is powered down to prevent damage.
You need standard RJ-45 to DB-60 serial cables for Cisco routers, and optionally CSU/DSU cables for synchronous connections.
Power down the router, insert the HWIC-2A/S into an available HWIC slot, secure it with screws, and power the router back on.
The HWIC-2A/S is supported on Cisco IOS Software versions 12.4 and later with WAN feature set enabled.
The HWIC-2A/S is ideal for legacy serial WAN links, backup connections, remote site access, and low-bandwidth voice/data integrations.
Use Cisco IOS commands under interface (s): `interface serial 0/0/0`, set encapsulation, clock rate, and line protocol as needed.
In synchronous mode, up to 2.048 Mbps per port. In asynchronous mode, throughput varies based on frame size and protocol overhead.
Yes, the HWIC-2A/S supports PPP, HDLC, Frame Relay, and custom encapsulations for serial WAN connections.
The HWIC-2A/S is available through authorized Cisco resellers, online marketplaces, and Cisco’s official distribution partners.
Cisco offers a 90-day limited hardware warranty and optional SMARTnet support for advanced replacement and technical assistance.
Use the `show hardware` and `show controllers serial` commands in IOS to confirm the HWIC-2A/S is recognized and operational.