Cisco HWIC-2A/S – 2-Port Async/Sync Serial WAN Card for ISR Routers
Model Name : Cisco HWIC-2A/S
Brand : Cisco
Key Features:
- 2 Smart Serial Ports – Configurable for either asynchronous or synchronous modes.
- Flexible WAN Protocol Support – HDLC, PPP, X.25, Frame Relay.
- Low-Speed Serial WAN Capability – Ideal for leased lines or modem connections.
- Supports Legacy Infrastructure – Great for SCADA, POS systems, or console access.
- Smart Serial Cable Compatibility – Uses Cisco Smart Serial cables for varied interfaces.
- Compact ISR Expansion – Integrates into existing ISR platforms without external power.
- Ideal For – Government, financial, industrial automation, and branch WAN setups.
30 days Warranty
Condition : Refurbished
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- Description
- Specification
- Reviews
Cisco HWIC-2A/S is a 2-port asynchronous/synchronous serial WAN interface card, designed for Cisco Integrated Services Routers (ISR) such as the 1800, 1900, 2800, 2900, 3800, and 3900 series.
It supports legacy WAN protocols like HDLC, PPP, X.25, and Frame Relay, and enables low-speed leased line or modem connectivity.
Each port uses a Smart Serial (26-pin) interface and can be configured for either asynchronous (e.g., modem, console) or synchronous (e.g., leased line) operation.
This card is perfect for industrial control systems, SCADA environments, and legacy serial integrations.
Frequently Asked Questions
Q1: Which routers support the HWIC-2A/S?
A: It works with Cisco ISR 1800, 1900, 2800, 2900, 3800, and 3900 Series routers.
Q2: What cables can I use with this module?
A: Cisco Smart Serial cables like: CAB-SS-V35MT CAB-SS-232MT CAB-SS-X21MT CAB-SS-530MT
Q3: Can I use it for modem or console access?
A: Yes, the asynchronous mode allows up to 115.2 Kbps — perfect for modems or terminal servers.
Q4: What’s the max speed for synchronous mode?
A: Up to 128 Kbps per port (synchronous).
Q5: Can both ports operate independently?
A: Yes, each port can be configured separately for sync or async communication.
Q6: Is the module hot swappable?
A: No, the router must be powered off before installation or removal.
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