The Cisco 4000 family Integrated Services Router (ISR) revolutionizes WAN communications in the enterprise branch. With new levels of built-in intelligent network capabilities and convergence, it specifically addresses the growing need for application-aware networking in distributed enterprise sites. These locations tend to have lean IT resources. But they often also have a growing need for direct communication with both private data centers and public clouds across diverse links, including
| Product Type | Cisco ISR 4331 Integrated Services Router |
| Performance | 100 Mbps base, up to 300 Mbps with Performance-on-Demand |
| Integrated Interfaces | 2x 10/100/1000 RJ45 + 1x 1G SFP (combo), 1x RJ45 management |
| Expansion | 2 NIM slots, 1 SM-X slot, PVDM4 DSP support |
| Included Licenses | AXV bundle (AppX + Security + Unified Communications), K9 strong crypto |
| SD-WAN Capability | Cisco IOS XE; Cisco SD-WAN (Viptela) ready |
| Memory/Storage | 4 GB DRAM (default), 4 GB flash; field-upgradable |
| Routing Features | IPv4/IPv6, BGP, OSPF, EIGRP, MPLS, NAT/PAT, QoS |
| Security Services | Zone-based firewall, IPS, AMP, URL filtering (licenses required) |
| VPN | IPsec, DMVPN, FlexVPN, GETVPN, SSL VPN; AES-256/3DES hardware crypto |
| Voice/UC | SRST, CUBE, PVDM4 DSPs; T1/E1 via NIMs; SIP/SCCP interoperability |
| Management | CLI, WebUI, NETCONF/YANG, RESTCONF, SNMPv3, NetFlow |
| USB/Console | 1x USB 2.0 host, 1x mini-USB console, 1x RJ45 console |
| Power | Internal AC 100–240V, 50/60 Hz; typical 60 W (module dependent) |
| Form Factor | 1RU rack-mount; enterprise-grade cooling and acoustics |
| Software | Cisco IOS XE with app-hosting (IOx), IWAN/SD-WAN, virtualization support |
Yes, the Cisco ISR4331-AXV/K9 Router is currently in stock and available for immediate shipment from our Boulder, CO warehouse. Same-day shipping on orders placed before 2pm MT.
This ISR4331-AXV/K9 is professionally refurbished or new-surplus enterprise hardware. Every unit is fully tested, factory-reset, and inspected before shipping. Cosmetic blemishes (rack marks, minor scuffs) may be present but never affect functionality.
The ISR4331-AXV/K9 comes with the Eldo Systems Lifetime Warranty covering hardware defects. We are an independent reseller — manufacturer warranties do not apply, but our lifetime coverage matches or exceeds typical OEM terms.
Free ground shipping on every order, included in the price. Orders ship same-day if placed before 2pm MT (Mon–Fri). Expedited overnight and 2-day options are available at checkout for urgent deployments.
Yes — we ship worldwide. International orders are quoted individually so we can present accurate freight, duties, and lead time. Use the Request a Quote form or call (484) 630-1533 to start.
Absolutely. We offer volume discounts and project pricing for resellers, integrators, and end-users buying in quantity. Submit a quote with your target quantity and our team will respond within 15 minutes during business hours.
Get the ISR4331-AXV/K9 from Eldo Systems with lifetime warranty and free ground shipping.
Independent Reseller Notice: Eldo Systems is an independent reseller of refurbished and new-surplus enterprise networking equipment. We are not affiliated with, authorized by, or endorsed by Cisco, Juniper, Arista, HPE, Dell, Meraki, Fortinet, Mellanox, NVIDIA, Finisar, or any other manufacturer listed on this site. All product names, logos, and brands are property of their respective owners. All products sold are refurbished or new-surplus unless otherwise noted. Manufacturer warranties do not apply; all items are covered by the Eldo Systems Lifetime Warranty.
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