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C1841-3G-S-SEC/K9
Cisco 1841, HWIC-3G-CDMA-S, 64MB FL /256MB DRAM, Adv Securit
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Ten years serving buyers who audit their vendors. From federal agencies to 20,000+ enterprise clients worldwide.
C1841-3G-S-SEC/K9 is a compact, fixed-configuration integrated services router engineered for branch offices and enterprise environments. Designed with a robust architecture, it offers versatile power options via an AC power supply and supports both wired WAN connectivity and LAN interfaces. The device integrates advanced security and VPN features, ensuring secure remote connectivity and safeguarding data traffic while delivering reliable performance even under demanding network conditions.
This router provides integrated services that include voice capabilities and firewall protection with support for QoS, making it ideal for applications ranging from secure Internet edge connectivity to unified communications. In addition to its built‐in 3G integration for wireless WAN redundancy, it features modular expansion slots for EHWIC modules that allow network administrators to scale performance and connectivity as business needs evolve.
C1841-3G-S-SEC/K9 price is is available on request. Get immediate quote.
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| C1841-3G-S-SEC/K9 |  CISCO1811W-AG-B/K9 |  CISCO1841-ADSL2-I |  C1861W-SRST-C-F/K9 |  C1861-UC-4FXO-K9 | |
|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Fixed | Fixed | Fixed | Fixed | Fixed |
| Built-in Security Features | Firewall | Firewall / Intrusion Prevention / Malware Protection | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention / Malware Protection | Firewall / Intrusion Prevention |
| Compliance Standards | FCC / CE / UL | FCC / CE | FCC / CE | FCC / CE / UL | FCC, CE |
| Connectivity Type | Wired | Wired / Wireless / Ethernet | Wired | Wired | Wired |
| Device Type | Router | Router | Router | Router | Router |
| Ethernet Technology | 10/100 | 10/100 | 10/100 Fast Ethernet | 10/100 | 10/100 |
| Features | VPN / Firewall / IPv6 Compatible | VPN / Firewall / NAT / QoS / IPv6 Compatible | VPN / Firewall / IPv6 Compatible | VPN / VoIP / IPv6 Compatible / Firewall | VPN / VoIP / Firewall / IPv6 Compatible |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 128 MB | 32 MB | 256 MB | 128 MB | 128 MB |
| Form Factor | Desktop | Desktop / Rack-mount | Desktop / Rack-mount | Desktop | Rack-mount |
| High Availability Support | Not Supported | Supported | Not Supported | Not Supported | Supported |
| Integrated Services | Voice | Voice / Video | Voice / WAN Optimization | Voice | Voice |
| Interface Ports | RJ-45 | RJ-45 | RJ-45 / ADSL | RJ-45 | RJ-45 |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 512 MB | 128 MB | 128 MB | 512 MB | 256 MB |
| Network Protocols | IPv4 / IPv6 | IPv4 | IP | IPv4, IPv6, MPLS | IP |
| Power | 45 W | 65 W | 75 Watt | 65W | 60 Watt |
| Power Source | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply |
| Product Name | Cisco C1841-3G-S-SEC/K9 Integrated Services Router | CISCO1811W-AG-B/K9 Wireless Gateway Router | CISCO1841-ADSL2-I | Cisco 1861W Integrated Services Router with SRST | Cisco 1861 Unified Communications Integrated Services Router (C1861-UC-4FXO-K9) |
| Product Type | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router | Integrated Services Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | SSH / Telnet / SNMP | SSH / Telnet / SNMP | Telnet / SSH / SNMP | CLI, SNMP, HTTP/HTTPS | Telnet, SSH, SNMP |
| Routing Protocols | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / EIGRP / BGP / RIP / Static Routing | OSPF / EIGRP / RIP / Static Routing |
| Stacking Capability | No | No | No | No | No |
| Use Case | Enterprise | Enterprise | Enterprise / Small Business | Small Business | Business |
| VPN Support | IPSec VPN | IPSec / SSL VPN | IPSec / SSL VPN / GRE | IPSec / SSL VPN / DMVPN / N/A | IPSec / SSL VPN |
| WAN Configuration | WAN | Dual WAN | WAN | Dual WAN | WAN |
| WAN Ports | 2 WAN | 2 WAN | 1 WAN (ADSL2) | 2 WAN | 2 WAN |
| Wireless Support | No | Yes | No | Yes | No |
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Reliable 3G CDMA router with advanced security. Keeps branch offices online during link failures.
Cisco 1841-3G-S-SEC provides smooth backup connectivity and secure routing. Ideal for remote sites.
Strong security features and dependable 3G performance. Easy to deploy and manage.
Stable routing with robust security. Keeps our small office connected reliably.
Trusted Cisco build and consistent uptime. Excellent for business continuity requirements.
The Cisco 1841 C1841-3G-S-SEC/K9 integrates dual Fast Ethernet ports, a HWIC-3G-CDMA-S mobile broadband module, 64 MB Flash, 256 MB DRAM, and an Advanced Security license for VPN, firewall, and intrusion prevention.
With the Advanced Security license active, the Cisco 1841 delivers up to 25 Mbps of secure data throughput, supporting IPsec VPNs, stateful inspection, and threat defense.
The HWIC-3G-CDMA-S module provides native CDMA2000 1xRTT and EV-DO Rev. 0/Rev. A cellular connectivity, enabling reliable WAN backup or primary data transport where wired links are unavailable.
This Cisco 1841 ships with 256 MB of DRAM for routing tables and features, plus 64 MB of Flash for IOS images and configuration files.
Yes. The Cisco 1841 supports up to 512 MB of DRAM and 128 MB of Flash memory, allowing you to expand performance and IOS storage as requirements grow.
Yes. With the Advanced Security license, it supports AES, 3DES, DES, MD5/SHA hashing, IPsec VPN tunnels, SSL VPN, Firewall, and IPS features.
The Cisco 1841 draws approximately 20 W under full load, measures 30.5 cm x 16.5 cm x 4.5 cm (W x D x H), and weighs 2.2 kg, suitable for desktop or rack-mount use.
It includes two built-in 10/100BASE-T Ethernet ports and one HWIC slot for WAN modules such as the HWIC-3G-CDMA-S, plus auxiliary and console ports for management.
Power off the router, insert the HWIC-3G-CDMA-S into the HWIC slot, secure with screws, power on, then use IOS CLI commands (hw-module slot 0 activate) to load the cellular interface.
Yes. The Cisco 1841 supports multiple Cisco IOS releases, including 12.4 and 15.x, enabling feature-rich routing, security, and wireless management.
The SEC/K9 license enables stateful firewall, IPsec VPN, SSL VPN client, intrusion prevention, anti-malware, and Cisco TrustSec for role-based access control.
Yes. The router supports advanced QoS features—classification, shaping, policing—and up to 120,000 concurrent sessions, ensuring traffic prioritization and performance.
You can manage it via SSH, SNMP, Cisco Security Device Manager (SDM), or Cisco Prime Infrastructure for centralized monitoring and configuration.
Operating temperature ranges from 0 °C to 40 °C, storage from –20 °C to 70 °C, with humidity tolerance of 10%–90% non-condensing for reliable deployment.
Cisco offers a one-year limited hardware warranty, with optional SMARTnet® service for 24/7 support, OS updates, and next-business-day hardware replacement.
While the 1841 excels in basic branch routing and security, newer ISR G2 models (e.g., 1900, 2900) offer higher throughput, integrated Wi-Fi, modular power, and enhanced virtualization.
United States
