C1921-3G-U-SEC/K9, Cisco 1900 Series Router, 2xGE WAN/3G WWAN/SECURITY

  • Brand: Cisco
  • Model: C1921-3G-U-SEC/K9
Rating:
80%
4/5.0
List Price: $3,610.95
35% OFF
$2,338.25
  • 100% Genuine
    100% Genuine
    Original, factory-verified
    3-Year Warranty
    3-Year Warranty
    Extended, enterprise-grade
    23 Years Expertise
    24 Years Expertise
    Proven, deployment-focused
  • Condition
    • Original New · Covered SN
    Express Shipping to United States Get Shipping Estimate
    Estimated shipping time: 2–6 business days via DHL, FedEx, UPS and more
    expert
    Certified Expertise Builds Trust
    CCIE · JNCIE · NSE7 · ACDX · HPE Master ASE · Dell Server/AI Expert
    • Faster Delivery, Globally Ready

      Faster Delivery, Globally Ready

      20+ years of supply chain expertise for faster multi-stop delivery with smooth customs.

      48H Worldwide Shipping
      10+ Global Warehouses
    • Keep Projects On Time

      Keep Projects On Time

      Reliable availability and real-time shipment visibility to keep every critical IT project on schedule.

    • Leading Global Distributor Since 2002

      Leading Global Distributor
      Since 2002

      A global ICT bridge delivering authentic hardware and trusted service for over 20 years.

        21500+ Enterprise Clients Served200+ Countries & Regions Covered
    • Worry-Free Coverage with RSCare

      Worry-Free Coverage with RSCare

      3-Year warranty for enterprise hardware, including advanced RMA, diagnostics, spare parts support, and OEM service compatibility.

      Cisco SmartNet
      HPE Foundation Care
      Dell ProSupport
      Juniper Care
      Fortinet Support
    • Your Trusted Genuine Source

      Your Trusted Genuine Source

      Authorized partnerships with 30+ brands, including Cisco, HPE, Dell, Juniper, and Fortinet.

      100% Authentic Products
      100,000+ Multi-Brand SKUs Available
    Overview
    End-of-Life Notice
    End-of-Life Notice
    C1921-3G-U-SEC/K9 is officially EOL. Service support ends on 2020-06-30.
    For full lifecycle details, see C1921-3G-U-SEC/K9 EOL.

    Cisco C1921-3G-U-SEC/K9 Overview

    The Cisco C1921-3G-U-SEC/K9 is a modular branch router designed for secure WAN access and integrated DSL connectivity. This Cisco router combines 2x Gigabit Ethernet WAN, an ADSL2+ DSL modem, and advanced security, including firewall protection, VPN support, and IPv6. With support for OSPF, BGP, EIGRP, and policy-based routing, it fits enterprise network edge, managed services, and SME deployments. Wired Ethernet and ADSL2+ up to 24 Mbps ensure reliable performance across diverse topologies.

    Product Highlights

    24 Mbps
    DSL Speed
    2 x GE
    WAN Ports
    512 MB
    System RAM

    Product Applications Scenarios

    Enterprise Network
    Integrated firewall, IPSec VPN, and rich routing protocols secure branch connectivity, reducing MPLS access costs and simplifying centralized IT operations.
    Service Providers
    ADSL2+ up to 24 Mbps, QoS, and MPLS support enable managed VPN and business internet services while lowering truck-rolls via remote management.
    Edge & IoT
    Reliable wired Ethernet and secure IPSec tunnels connect remote sites and controllers, improving uptime for distributed IoT and telemetry networks.

    Product Features Comparison

      Cisco Cisco Cisco Cisco
    Model C1921-3G-U-SEC/K9, Cisco 1900 Series Router, 2×GE WAN/3G WWAN/SECURITY C1921-3G-G-SEC/K9, Cisco 1900 Series Router, 2 GE WAN/1 SFP/3G Wireless CISCO2911-V/K9, Cisco 2911 Voice Bundle, Voice/UC/License C2911-WAASX/K9, Cisco 2900 Series Router, WAAS Express, Integrated Services, Bundle
    Brand Cisco Cisco Cisco Cisco
    Routing Throughput n/a n/a n/a n/a
    Interface Configuration 2 x 10Base-T/100Base-TX/1000Base-T (RJ-45), 1 x console (serial), 1 x console (mini-USB Type B), 1 x auxiliary (serial), 1 x USB 2.0 Type A, 1 x ADSL2+ WAN (RJ-11) 2 x 10Base-T/100Base-TX/1000Base-T (RJ-45), 1 x console (serial), 1 x console (mini-USB Type B), 1 x auxiliary (serial), 1 x USB 2.0 Type A (4-pin), 1 x ADSL2+ WAN (RJ-11) Data Link Protocols: Ethernet, Fast Ethernet, Gigabit Ethernet LAN Interfaces: 3 x 10Base-T/100Base-TX/1000Base-T (RJ-45); Management Interfaces: 1 x console (RJ-45), 1 x console (mini-USB Type B); Serial / USB Interfaces: 1 x auxiliary (RJ-45), 2 x USB Type A (4-pin)
    Supported Protocol Routing Protocol: OSPF, IS-IS, BGP, EIGRP, DVMRP, PIM-SM, IGMPv3, GRE, PIM-SSM, static IPv4 routing, static IPv6 routing, policy-based routing (PBR) Routing Protocols: OSPF, IS-IS, BGP, EIGRP, DVMRP, PIM-SM, IGMPv3, GRE, PIM-SSM, static IPv4 routing, static IPv6 routing, policy-based routing (PBR) Routing Protocols: OSPF, IS-IS, BGP, EIGRP, DVMRP, PIM-SM, IGMPv3, GRE, PIM-SSM, static IPv4 routing, static IPv6 routing Routing Protocols: OSPF, IS-IS, BGP, EIGRP, DVMRP, PIM-SM, IGMPv3, GRE, PIM-SSM, static IPv4 routing, static IPv6 routing
    VPN Capability Features: Firewall protection, VPN support, MPLS support, VLAN support, Syslog support, IPv6 support, CBWFQ, WRED, QoS; Network / Transport Protocol: L2TP, IPSec Features: Firewall protection, VPN support, MPLS support, VLAN support, Syslog support, IPv6 support, CBWFQ, WRED, QoS; Network / Transport Protocol: L2TP, IPSec Key Features: Firewall protection, VPN support, MPLS support, Syslog support, IPv6 support, CBWFQ, WRED Key Features: Firewall protection, VPN support, MPLS support, Syslog support, IPv6 support, CBWFQ, WRED
    Integrated Features DSL modem; ADSL/ADSL2/ADSL2+; Max Transfer Rate: 24 Mbps; OS Provided: Cisco IOS IP Base DSL modem; ADSL/ADSL2/ADSL2+; Max Transfer Rate: 24 Mbps; OS Provided: Cisco IOS IP Base DRAM Memory: 512 MB (installed) / 2 GB (maximum); Flash Memory: 256 MB (installed) / 8 GB (maximum) DRAM Memory: 2.5 GB; Flash Memory: 256 MB installed / 8 GB max; Additional Software: Cisco WAAS Express

    Optional Add-ons

    Model Number Description
    HWIC-3G-HSPA-G Cisco 3G HSPA HWIC module for 1900 Series, cellular WAN backup
    CAB-ADSL-RJ11 Cisco ADSL/ADSL2+ RJ-11 cable for DSL WAN connectivity
    MEM-1900-512U Cisco 512 MB DRAM upgrade for Cisco 1900 Series routers

    Quality Certifications

    • ISO 14001
    • ISO 9001
    • RoHS
    • REACH
    • CE
    • FCC
    Specification

    Cisco C1921-3G-U-SEC/K9 Specification

    Model
    C1921-3G-U-SEC/K9
    Brand
    Cisco
    Device Type
    Router
    Enclosure Type
    Desktop, modular, 1U
    Connectivity Technology
    Wired
    Data Link Protocol
    Ethernet, Fast Ethernet, Gigabit Ethernet
    Network / Transport Protocol
    L2TP, IPSec
    Routing Protocol
    OSPF, IS-IS, BGP, EIGRP, DVMRP, PIM-SM, IGMPv3, GRE, PIM-SSM, static IPv4 routing, static IPv6 routing, policy-based routing (PBR)
    Remote Management Protocol
    SNMP, RMON
    Features
    Firewall protection, VPN support, MPLS support, VLAN support, Syslog support, IPv6 support, Class-Based Weighted Fair Queuing (CBWFQ), Weighted Random Early Detection (WRED), Quality of Service (QoS)
    Layer 2/3 Compliant Standards
    IEEE 802.1Q, IEEE 802.3ah, IEEE 802.1ag
    RAM
    512 MB (installed) / 512 MB (max)
    Flash Memory
    256 MB (installed) / 256 MB (max)
    Modem Type
    DSL modem
    Digital Signaling Protocol
    ADSL, ADSL2, ADSL2+
    DSL Protocols & Specifications
    ITU G.992.1 (G.DMT), ITU G.992.3 (G.DMT.bis), ITU G.992.5
    Max Transfer Rate
    24 Mbps
    Interfaces
    2 x 10Base-T/100Base-TX/1000Base-T (RJ-45), 1 x console (serial), 1 x console (mini-USB Type B), 1 x auxiliary (serial), 1 x USB 2.0 Type A, 1 x ADSL2+ WAN (RJ-11)
    Expansion Slot(s)
    2 (total) / 1 (free) x EHWIC
    Power Device
    Internal power supply
    Voltage Required
    AC 120/230 V (50/60 Hz)
    Width
    13.5 in
    Depth
    11.5 in
    Height
    1.7 in
    Safety & EMC Standards
    VCCI, CISPR 22 Class A, CISPR 24, EN 55024, EN 55022 Class A, EN 50082-1, AS/NZS 60950-1, ICES-003 Class A, CS-03, FCC CFR47 Part 15, EN 300-386, UL 60950-1, IEC 60950-1, EN 60950-1, CSA C22.2 No. 60950-1
    OS Provided
    Cisco IOS IP Base
    Min Operating Temperature
    32 °F
    Max Operating Temperature
    104 °F
    Humidity Range Operating
    10% to 85%
    Weight
    5.3 kg

    Get more information

    Discover unbeatable prices and fast shipping for the C1921-3G-U-SEC/K9 . Access the detailed C1921-3G-U-SEC/K9 datasheet and ensure you're getting the best deal with our reliable delivery service. Need assistance? Our free live chat support is here to help. For more information about the product and pricing, contact us via live chat or email us at [email protected].

    Quality Certifications

    Need Help? Technical Experts Available Now.

    • +1-626-655-0998 (USA)
      UTC 15:00-00:00
    • +852-2592-5389 (HK)
      UTC 00:00-09:00
    • +852-2592-5411 (HK)
      UTC 06:00-15:00
    Need Help? Technical Experts Available Now.
    Q&A

    Questions & Answers

    How does the C1921-3G-U-SEC/K9 compare to similar products?

    Compared to similar routers, the C1921-3G-U-SEC/K9 stands out with its integrated 3G wireless WAN and robust security features, making it highly suitable for small business networks.

    What common troubleshooting steps can I try for the C1921-3G-U-SEC/K9?

    Common troubleshooting includes checking cable connections, ensuring firmware is up-to-date, and using the Cisco Configuration Professional for diagnostic checks.

    What makes the C1921-3G-U-SEC/K9 suitable for small businesses?

    The C1921-3G-U-SEC/K9's integrated security, reliable connectivity, and scalability make it highly suitable for small businesses needing an all-in-one router solution.

    Is router-switch.com a reliable distributor?

    Absolutely. As a multi-brand authorized distributor, router-switch.com is directly certified by leading technology manufacturers. We guarantee 100% genuine products, competitive pricing, and full manufacturer warranties and support.

    Warranty
    • Your Trusted Global ICT Partner

      Delivering reliable, cross-border fulfillment with 20+ years of expertise, backed by rigorous QC, fast logistics, and worldwide warehousing.
      Global warehousing
      Global warehousing
      10+ hubs positioned for fast international dispatch and stable availability.
      Seamless cross-border
      Seamless cross-border
      QC-verified packing and predictable delivery via FedEx, DHL, UPS.
      Your Trusted Global ICT Partner
    • ICT Tools Hub for Confident Monitoring

      ICT Tools Hub for Confident Monitoring

      Stay informed on product lifecycle status and real-time inventory availability—supporting confident planning, sourcing, and operational execution.
      EOL/EOSL Checker
      Verify product lifecycle status to plan purchases and avoid EOL/EOSL risks.
      Request VIP Inventory Portal Access
      Connect via live chat for VIP access to real-time inventory on priority SKUs.
    • Certified Experts Across Leading Vendors

      Professional guidance for network, security & data center builds, delivered by certified experts with extensive, hands-on deployment experience.
      Multi-vendor engineering
      Multi-vendor engineering
      Certified expertise across Cisco, HPE, Aruba, Dell, Juniper, Huawei and Fortinet.
      Deployment-ready guidance
      Deployment-ready guidance
      Faster, safer rollouts with project-focused engineering guidance.
      Certified Experts Across Leading Vendors

    The Choice of 21,500 +Global Customers

    • Ford
    • Disney
    • Nestle
    • Toyota
    • Walmart
    • Philips
    • Ups
    • Huatt
    • Hsbc
    • Novartis
    • Siemens Healthineers
    • Bt
    • Reference Johnson
    • T
    • Att
    • Lgu
    • Sk Telecom
    • Veerizon
    Industry-Leading Warranty Coverage You Can Trust
    • 100% Low Price Guarantee
      100% Low Price Guarantee
      Router-switch.com offers genuine, high-quality ICT products at competitive wholesale prices—ensuring exceptional value without compromising quality.
    • 100% Quality Assurance
      100% Quality Assurance
      All items are brand new, original, and factory-sealed.
      Upon request, each unit can be fully tested and verified by a Cisco CCIE-certified engineer to ensure perfect working condition before shipment.
    • 100% Money-Back Guarantee
      100% Money-Back Guarantee
      If you are not satisfied with your purchase, you may request an exchange or full refund. Our customer service team will guide you through the return process quickly and smoothly.
      Visit Return Policy page for more information.
    • Free Cisco CCIE Technical Support
      Our Cisco CCIE-certified experts provide free professional support via phone, email, online chat, or remote login—helping you deploy and troubleshoot with confidence.
    • Flexible & Secure Payment and Shipping
      Flexible & Secure Payment and Shipping
      We support multiple secure payment and logistics options, backed by industry-leading verification:
      • Pay by wire transfer.
      • Pay with your paypal.
      • Pay with your Visa credit card.
      • Pay with your Mastercard credit card.
      • Pay with your Discover Card.
      • Pay by American Express.
      More
      • mcafee-secure
      • verisign-secured
      • pci-dss
      • ssl-encryption
      Visit How to Pay page for more information
    Warranty Coverage & RMA Instructions
    • Extended, Worry-Free Warranty Coverage
      Extended, Worry-Free Warranty Coverage
      • Factory New Sealed Enterprise Hardware: 3 Years
      • Factory New Sealed Consumer Devices: 1 Year
      Visit Warranty Policy page for more information
    • How to Get Support
      How to Get Support
      If you encounter issues with products, please reach out to your dedicated sales representative. They will assist with diagnostics, remote troubleshooting, and RMA processing if necessary.
      Visit Contact Us page for more support options.

    Best-Fit Solutions for Your Network

    Deploy DeepSeek-V3/R1: Powerful AI, Low Cost

    Deploy DeepSeek-V3/R1: Powerful AI, Low Cost

    Expert-configured AI solution: Same power, 90% savings—multi-scenario flexibility with Dell/Huawei/Lenovo options.

    AI
    Beyond Bandwidth: The 100G+ Data Center Architecture

    Beyond Bandwidth: The 100G+ Data Center Architecture

    The must-have 100G foundation - AI-ready growth, zero-latency performance

    Data Center
    400G/800G Ethernet Switch: Maxmize Margins via AI-Ready Solutions

    400G/800G Ethernet Switch: Maxmize Margins via AI-Ready Solutions

    High-Profit data center switches from Cisco, Huawei, Mellanox & Juniper.

    Ethernet Switch

    Product Tags