Cisco 4-Port Async/Sync Serial HWIC

The 4-Port Async/Sync Serial HWIC provides four serial async/sync ports using Smart Serial connectors and cabling. Each port can operate up to 256 Kbps in sync mode, or up to 230.4 Kbps in async.

• DCN (Data Communications Network)
• Serial & Legacy Concentration
• Bi-synchronous Support

Interfaces supported:

• In both DTE and DCE formats: V35, X.21, RS-232, and RS-449
• In DTE format only: EIA-530 and EIA-530A

Supported Platforms & Minimum IOS Versions:

• Cisco 2851 - 12.3(14)T
• Cisco 2821 - 12.3(14)T
• Cisco 2811 - 12.3(14)T
• Cisco 2801 - 12.3(14)T
• Cisco 1841 - 12.3(14)T
• Cisco 3845 - 12.3(14)T
• Cisco 3825 - 12.3(14)T