Featured Deal
Hand-picked by our procurement team for standout value. This unit is offered at our sharpest price on current stock, verified against live market rates.
Name:
Added to cart 28 times recently
Ready to Ship
Certified Refurbished
Professionally inspected, bench-tested, and firmware-verified, with configurations wiped. Restored to full working order and backed by our warranty.
$14,792.00
$1,246.0091.6% off
Quantity:
3 Year Extended Warranty
Same-day Shipping
30-Day Money Back Guarantee
Shipping:
Payment:
3 Year Extended Warranty
Same-day Shipping
30-Day Money Back Guarantee
Need Additional Discount on Product?
Request a quote below - Get Exclusive Pricing and Support.
Shipping:
Payment:
C1-CISCO4351/K9
Cisco ONE ISR 4351 (3GE.3NIM.2SM.4G FLASH.4G DRAM.IPB)
Trusted by the Highest-Stakes Buyers
Federal agencies and Fortune 500 operations source through ORM Systems.
US Government & Defense
Enterprise Clients
Built Global. Stocked Local.
Regional teams and 25+ distribution partners keep stock near you and accountability in your time zone.
Buyer Protection on Every Order
Pay by PayPal or Revolut with full chargeback rights. Order on PO terms, Net-30 for government.
Verified By Federal Bodies
Every registration we claim is public record — check our federal contractor status yourself before you spend a dollar.
Since 2016, Enterprise-Trusted
Ten years serving buyers who audit their vendors. From federal agencies to 20,000+ enterprise clients worldwide.
C1-CISCO4351/K9 is a high-performance enterprise router featuring a modular architecture designed for branch office connectivity, delivering robust integrated services including voice, video, and WAN optimization. It offers versatile power options with AC supply and redundant configurations, along with dual WAN and four LAN interfaces that use 10/100/1000 Ethernet technology, ensuring reliable connectivity in demanding network environments.
C1-CISCO4351/K9 provides advanced VPN capabilities with IPSec, DMVPN, and FlexVPN support, while its performance is backed by throughput capacities of up to 400 Mbps and built-in firewall, intrusion prevention, and malware protection features. Modular expansion is achieved through available EHWIC slots, and its high availability, managed and rack-mount form factor make it ideally suited for enterprise deployments requiring secure, scalable, and resilient network access.
C1-CISCO4351/K9 price is $1,246.00, a 91.6% saving from the Cisco list price of $14,792.00. C1-CISCO4351/K9 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for C1-CISCO4351/K9 for additional pricing. Browse the full Router Isr 4000 series or explore all Cisco products.
Scenario: A global banking institution deploys the C1-CISCO4351/K9 Cisco ONE ISR 4351 (3GE, 3 NIM, 2 SM, 4G Flash, 4G DRAM, IPB) at regional branches to establish high-speed, encrypted IPsec VPN tunnels to on-premises data centers and public cloud platforms. Three Gigabit Ethernet ports and hardware-accelerated encryption deliver sub-millisecond latency and 500 Mbps throughput. Outcome: Achieves end-to-end data security, meets PCI-DSS compliance, and reduces application access times by 40%, enhancing customer satisfaction and regulatory adherence.
Scenario: A national retail chain implements the C1-CISCO4351/K9 Cisco ONE ISR 4351 as an SD-WAN edge router across 200 stores. Three NIM slots support LTE/WAN failover and Cisco Intelligent WAN features, dynamically steering point-of-sale transactions, inventory backups, and video surveillance over optimal paths. Outcome: Cuts MPLS costs by 60%, boosts network uptime to 99.9%, and improves checkout speeds by 30%, delivering rapid ROI and uniform user experience.
Scenario: A multi-building hospital campus uses the C1-CISCO4351/K9 Cisco ONE ISR 4351 to segment networks for medical devices, patient Wi-Fi, and administrative systems. Two service modules host advanced firewall and intrusion prevention, while 4 GB Flash and 4 GB DRAM enable fast configuration updates. Outcome: Ensures HIPAA compliance, prevents lateral threat propagation, and simplifies policy management—reducing breach remediation time by 50% and sustaining mission-critical uptime.
Mon–Fri: [09:00-16:00]
Avg. response under 30 mins
| C1-CISCO4351/K9 |  ISR4451-X/K9 |  ISR4221X/K9 |  C1-CISCO4321/K9 |  ISR4461-AXV/K9 | |
|---|---|---|---|---|---|
| Architecture | Modular | Modular | Fixed | Modular | Modular |
| Compliance Standards | FCC / CE / UL | Safety: UL 60950-1, CAN/CSA C22.2 No. 60950-1, EN 60950-1, AS/NZS 60950-1, IEC 60950-1 / EMC: 47 CFR Part 15, ICES-003 Class A, EN55032 Class A, CISPR32 Class A, AS/NZS CISPR 32 Class A, VCCI V-3, CNS 13438, EN 300-386, EN 61000, EN 55024, CISPR 24, KN22, KN24 | FCC / CE / RoHS | FCC / CE | FCC / CE / UL |
| Connectivity Type | Wired | Wired | Wired | Wired | Wired |
| Ethernet Technology | 10/100/1000 | Gigabit Ethernet | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Expansion Slots | EHWIC | 3 x NIM; 2 x SM-X; 1 x ISC; OIR for I/O modules | EHWIC / NIM | NIM / EHWIC | EHWIC / NIM |
| Form Factor | Rack-mount | Rack-Mount 2U | Desktop | Rack-mount | Rack-mount |
| High Availability Support | Supported | High Availability Supported | Supported | Supported | Supported |
| LAN Ports | 4 LAN Ports | 4 x 1GbE (configurable, shared with WAN) | 4 LAN Ports | Modular LAN | 4 LAN Ports |
| Power | 65 Watt | 100-240 VAC; 48-60V DC; 450W AC max; redundant PS optional | 65W | 110 W | 370W |
| Power Source | AC Power Supply / Redundant | AC or DC | AC Power Supply / DC Power Supply / Redundant | AC Power Supply with Redundant Options | AC Power Supply / Redundant |
| Product Name | C1-CISCO4351/K9 | Cisco ISR 4451-X Integrated Services Router | Cisco ISR 4221 Integrated Services Router | Cisco 4321 Integrated Services Router (C1-CISCO4321/K9) | Cisco ISR 4461 Integrated Services Router |
| Product Type | Enterprise Router | Enterprise Router / Branch Router / SD-WAN Router / VPN Router | Enterprise Router | Enterprise Router | Enterprise Router |
| QoS Features | Supported | CBWFQ; WRED; Hierarchical QoS; PBR; NBAR | Supported | Supported | Supported |
| Remote Management | SNMP / CLI / NETCONF | CLI / Web GUI / SNMP / NETCONF / Cloud Dashboard / Controller | SSH / Telnet / SNMP | SSH / Telnet / SNMP | SSH / Telnet / SNMP |
| Routing Protocols | OSPF / BGP / EIGRP / IS-IS / RIP / Static Routing | BGP / EIGRP / IS-IS / OSPF / RIP / LISP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / IS-IS / RIP / Static Routing |
| Use Case | Enterprise | Enterprise / Branch Office | Business | Enterprise | Enterprise |
| VPN Support | IPSec / DMVPN / FlexVPN | IPsec / DMVPN / GETVPN / GRE / VPN License Required | IPSec / SSL VPN / DMVPN / FlexVPN | IPSec / SSL VPN / DMVPN / FlexVPN | IPSec / SSL VPN / DMVPN / FlexVPN |
| WAN Configuration | Dual WAN | Multi-WAN / Modular WAN | Dual WAN | Dual WAN | Dual WAN |
| WAN Ports | 2 WAN | 4 x 1GbE (configurable WAN/LAN) | 2 WAN | 2 WAN | 2 WAN |
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.
Balanced performance and expandability. Works well for growing branch networks.
Cisco ONE licensing reduced complexity. Reliable routing and uptime.
Solid mid range ISR with predictable performance. Easy to manage.
Handles mixed workloads smoothly. Meets enterprise expectations.
Dependable router for business critical environments.
The Cisco ONE ISR 4351 features 3 integrated Gigabit Ethernet ports, 3 Network Interface Module (NIM) slots, and 2 Service Module (SM) slots to support flexible connectivity and feature expansion.
This router ships with 4 GB of DRAM and 4 GB of onboard flash storage, providing robust performance for routing, security, and services.
The Cisco ONE ISR 4351 delivers up to 100 Mbps of default data throughput and can be boosted to 200 Mbps with an optional performance license.
Cisco ONE offers modular right-to-use licensing bundles—such as Secure, WAN, and Cloud—simplifying access to Cisco DNA Advantage, Security, and other essential features on the ISR 4351.
The platform includes built-in firewall (ASA), intrusion prevention (IPS), VPN, and URL filtering services to protect your branch office from advanced threats.
Yes. The Cisco ONE ISR 4351 fully supports Cisco SD-WAN software, enabling centralized policy control, secure segmentation, and optimized application performance.
You can manage the ISR 4351 using Cisco DNA Center, Cisco Prime Infrastructure, or the embedded Cisco IOS XE CLI for comprehensive lifecycle and policy management.
Yes. It supports Cisco’s NFV Infrastructure (NFVi) on IOS XE, enabling you to deploy virtual network functions (VNFs) such as vEdge, vSmart, and vBond on the same platform.
The ISR 4351 includes an internal 240W AC power supply with auto-switching capability, and it supports an optional redundant power supply for high availability.
Absolutely. With integrated routing, security, and services, the ISR 4351 is optimized for mid-sized enterprise headquarters and branch deployments requiring up to 200 Mbps of throughput.
The ISR 4351 operates between 0–40°C (32–104°F) with humidity of 10–85% non-condensing, and it meets NEBS Level 3 and ETSI ETS 300-019 Class 3 standards.
Hardware upgrades are done via NIM or SM additions; software upgrades leverage the Cisco IOS XE upgrade process with the Cisco Software Upgrade Manager for minimal disruption.
Cisco includes a 1-year limited hardware warranty and 90-day software warranty. Optional SMARTnet® services offer 24×7 support, software updates, and rapid hardware replacement.
Supported WAN interfaces include Gigabit Ethernet, T1/E1, xDSL, 3G/4G wireless, and fiber through compatible NIM and SM modules.
The ISR 4351 is UL, CE, FCC, KC, RCM, and VCCI certified, and it complies with RoHS, WEEE, and REACH environmental regulations.
With built-in Cisco IOS XE services, the ISR 4351 can host protocol translation, data aggregation, and secure connectivity for IoT devices at your branch or edge.
United States
