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C1921-3G-U-SEC/K9
Cisco 1900 Series Wireless WAN Bundle C1921-3G-U-SEC/K9
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C1921-3G-U-SEC/K9 is a fixed enterprise router designed to deliver robust security and versatile connectivity for branch office and mid-sized business applications. It features a fixed architecture powered by an AC power supply that supports multiple WAN and LAN interface options, integrated VPN capabilities, and advanced performance to meet demanding network environments.
This router comes with integrated security services including firewall and IPS features, and is built to handle voice and digital video transmissions, making it ideal for secure enterprise communications. With modular expansion via EHWIC slots and configurable WAN/LAN interfaces, the C1921-3G-U-SEC/K9 provides flexible connectivity and efficient throughput, ensuring reliable performance for mission-critical applications.
C1921-3G-U-SEC/K9 price is $1,325.00, a 47.9% saving from the Cisco list price of $2,545.00. C1921-3G-U-SEC/K9 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for C1921-3G-U-SEC/K9 for additional pricing. Browse the full Router Isr 1900 series or explore all Cisco products.
Deploy the Cisco C1921-3G-U-SEC/K9 Cisco 1900 Series Wireless WAN Bundle to deliver primary wired connectivity and automatic 3G wireless failover for remote offices. Benefit from hardware-accelerated VPN, advanced security, and zero-touch provisioning via Cisco IOS. Outcome: Achieve 99.99% WAN availability, prevent revenue loss from outages, and simplify branch-site management.
Leverage the C1921-3G-U-SEC/K9 Cisco 1900 Series Wireless WAN Bundle for rapid deployment of encrypted VPN at retail pop-up stores, trade shows, and temporary events. Integrated 3G uplink, PCI-compliant firewall, and intuitive Cisco Configuration Professional setup enable go-live in minutes. Outcome: Drive customer engagement, ensure transaction security, and maximize ROI on short-term installations.
Use the Cisco C1921-3G-U-SEC/K9 Cisco 1900 Series Wireless WAN Bundle to connect IoT sensors, SCADA units, and field-grade devices across remote sites like pipelines, solar farms, and utilities. Ruggedized hardware, centralized Cisco DNA Center integration, and 3G backup deliver resilient telemetry links. Outcome: Enhance operational visibility, reduce maintenance costs, and proactively detect anomalies in real time.
To get the detailed certification, please go to the Compliance Center.
| C1921-3G-U-SEC/K9 |  C1921-3G-S-SEC/K9 |  C1921-3G-U-K9 |  C1-CISCO1941/K9 |  C1-CISCO1921/K9 | |
|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Fixed | Fixed | Fixed | Fixed | Fixed |
| Broadband | N/A | 3G | 3G | N/A | N/A |
| Built-in Security Features | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention | Firewall, Intrusion Prevention | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention |
| Compliance Standards | FCC / CE | FCC / CE | FCC, CE | FCC / CE | FCC, CE, RoHS |
| Connectivity Type | Wired | Wired | Wired | Wired | Wired |
| Depth | 11 inches | N/A | N/A | 12.5 inches | N/A |
| Device Type | Router | Router | Router | Router | Router |
| EMC | FCC / CE | FCC / CE | N/A | N/A | FCC / CE |
| Ethernet Technology | 10/100/1000 | 10/100 | 10/100 | 10/100 | 10/100 |
| Expansion Slots | EHWIC | EHWIC | NIM | EHWIC | EHWIC |
| Features | VPN / IPv6 Compatible / Firewall | VPN / Firewall / IPSec / 3G Connectivity / Integrated Services | VPN, IPv6 Compatible, Firewall | VPN / Firewall / IPv6 Compatible / Integrated Services | VPN / VoIP / IPv6 Compatible / Firewall |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 256 MB | 256 MB | 256 MB | 128 MB | 256 MB |
| Form Factor | Desktop | Desktop | Rack-mount | Desktop / Rack-mount | Desktop |
| Height | 1.75 inches | N/A | N/A | 1.73 inches | N/A |
| High Availability Support | Not Supported | Supported | Not Supported | Not Supported | Not Supported |
| Integrated Services | Voice | Voice | Voice, Video | Voice / Video / WAN Optimization | Voice |
| Interface Ports | RJ-45 / 3G | RJ-45 | RJ-45 | RJ-45 | RJ-45 |
| LAN Ports | N/A | 4 LAN Ports | 2 LAN Ports | 2 LAN Ports | 4 LAN Ports |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 256 MB | 256 MB | 512 MB | 256 MB | 256 MB |
| Modular Slots Available | N/A | 2 Slots | 2 Slots | 2 Slots | 2 Slots |
| Network Protocols | IPv4, IPv6 | IPv4 / IPv6 | OSPF, EIGRP, BGP, RIP, Static Routing | IPv4 / IPv6 | IPv4, IPv6 |
| Power | 65 Watt | 85 Watts | 43W | 54 W | 65 |
| Power Source | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply |
| Product Name | C1921-3G-U-SEC/K9 | Cisco 1921 Integrated Services Router | Cisco 1921 Integrated Services Router - 3G | C1-CISCO1941/K9 Cisco 1941 Integrated Services Router | C1-CISCO1921/K9 |
| Product Type | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | CLI / SNMP / Telnet / HTTPS | CLI / SNMP / Web-based | Telnet, SSH, SNMP | Telnet / SSH / SNMP / HTTP / HTTPS | Telnet, SSH, SNMP |
| Routing Protocols | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing |
| Safety | IEC 60950 | UL | N/A | N/A | UL, cUL |
| Speed/Capacity | Gigabit | N/A | 10/100 | N/A | N/A |
| Stacking Capability | No | No | No | No | No |
| Telecom | N/A | N/A | N/A | N/A | TIA/EIA |
| Throughput Capacity | 0.075 Gbps | 50 Mbps | 0.03 Gbps | N/A | 0.075 |
| Use Case | Enterprise | Enterprise | Enterprise, Business, Small Business | Enterprise / Business | Small Business |
| VPN Support | IPSec / SSL VPN / DMVPN / FlexVPN | IPSec / DMVPN / FlexVPN | IPSec / SSL VPN / DMVPN | IPSec VPN / SSL VPN / DMVPN | IPSec / GRE / DMVPN |
| WAN Configuration | WAN | Dual WAN | Dual WAN | WAN | Dual WAN |
| WAN Ports | 1 WAN | 2 WAN | 2 WAN | 2 WAN | 2 WAN |
| Weight | 11 lbs | N/A | N/A | 11.8 lbs | N/A |
| Wi-Fi Standard | N/A | N/A | N/A | N/A | N/A |
| Width | 17.2 inches | N/A | N/A | 17.1 inches | N/A |
| Wireless Support | No | No | No | No | No |
Ideal for businesses that need secure 3G WAN connectivity. The security features are excellent, and the router performs reliably under various conditions.
We use this for remote offices. It provides a secure and stable 3G connection with seamless failover to primary links.
Solid performance for secure wireless WAN connectivity. It's easy to deploy, and the security features meet our compliance requirements.
This router handles 3G connections well and provides secure communication channels for our remote offices.
A great solution for adding 3G connectivity with security. The router has worked flawlessly for our distributed offices.
The Cisco 1900 Series Wireless WAN Bundle C1921-3G-U-SEC/K9 is an integrated branch router platform that combines Layer 3 routing, 3G WAN connectivity and advanced security in a single chassis.
Key features include dual integrated 10/100/1000 Ethernet ports, embedded 3G/UMTS cellular modem, hardware-accelerated VPN, stateful firewall, and Cisco IOS security licensing.
The C1921-3G-U-SEC/K9 supports HSPA+, UMTS, and GSM/GPRS/EDGE networks for reliable 3G connectivity.
The Cisco C1921 router delivers up to 85 Mbps of forwarding performance and up to 35 Mbps of IPSec VPN throughput.
The bundle includes one embedded 3G/UMTS cellular modem, pre-installed for immediate WAN failover or primary connectivity.
Built-in security features include zone-based firewall, intrusion prevention, secure VPN tunnels (IPSec/SSL), and content filtering via Cisco IOS Security.
It supports IPSec, SSL VPN, GRE and DMVPN for site-to-site and remote-access security.
You can configure it via the Cisco IOS CLI, Cisco Configuration Professional GUI, or Cisco Prime Infrastructure for centralized management.
It’s ideal for small to midsize branch offices, retail locations, kiosks and mobile or temporary sites requiring secure WAN connectivity.
Yes, its integrated cellular failover, advanced security and modular design make it perfect for remote or unmanned branches.
The router supports AC power input (100–240 VAC) and optional DC power modules for flexible deployment.
The 3G module arrives factory-installed; simply insert a compatible SIM card and configure the cellular profile in Cisco IOS.
Yes, it ships with rack-mount brackets for 19-inch EIA standard equipment racks.
Cisco provides a one-year limited hardware warranty with options to purchase Cisco SMARTnet® for 24×7 support and software updates.
Download the latest Cisco IOS image from the Cisco Software Download portal and perform an upgrade via TFTP, USB or Cisco Prime.
You can download the official datasheet, configuration guides and command references from Cisco’s website under the C1921 Series documentation section.