The Cisco 1841 Integrated Services Router provides the following support: \n

Wire-speed performance for concurrent services at T1/E1 WAN rates
Enhanced investment protection through increased performance and modularity
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Enhanced investment protection through increased modularity
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Increased density through High-Speed?WAN?Interface Card Slots (two)
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Support for over 90 existing and new modules
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Support for majority of existing WICs, VWICs, and VICs (data mode only)
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Two Integrated 10/100 Fast Ethernet ports
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Security
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On-board encryption
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Support of up to 800?VPN?tunnels with the AIM-EPII-PLUS Module
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Antivirus defense support through Network Admission Control (NAC)
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Intrusion Prevention as well as stateful Cisco IOS Firewall support and many more essential security features
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It is used product but its condition is like refurbished and 100% working perfectly.

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Note:?Here are some sample pictures they will give you the idea of the product but Original product might have few minor scratch but we assure you about the quality of the product.

Cisco 1841 Enterprise Router