Cisco ISR4331-DC/K9
ISR 4331 (3GE 2NIM 1SM 4G FLASH 4G DRAM IPB) W/ DC PS

Key facts
The Cisco ISR4331-DC/K9 is a router listed on tprice.co. Prology AU currently offers it refurbished from AUD 3,118. Prology US currently offers it refurbished from USD 2,213. RRP AUD 11,757.44≈ USD 8,242 (Oct 2026). Request a quote for volume pricing, or sell us your used routers.
Overview
CISCO ISR 4331 (3GE 2NIM 1SM 4G FLASH 4G DRAM IPB) W/ DC PS
Cisco® 4000 Family Integrated Services Routers (ISRs) form an Software Defined WAN platform that delivers the performance, security, and convergence capabilities that today's branch offices need.
Product overview
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 Multiprotocol Label Switching (MPLS) VPNs and the Internet.
The Cisco 4000 Family contains the following platforms: the 4461, 4451, 4431, 4351, 4331, 4321 and 4221 ISRs.
Features and benefits
Cisco 4000 Family ISRs provide you with Cisco® Software Defined WAN (SDWAN) software features and a converged branch infrastructure. Along with superior throughput, these capabilities form the building blocks of next-generation branch-office WAN solutions.
Cisco Software Defined WAN
Cisco SDWAN is a set of intelligent software services that allow you to reliably and securely connect users, devices, and branch office locations across a diverse set of WAN transport links. SDWAN-enabled routers like the ISR 4000 dynamically route traffic across the "best" link based on up-to-the-minute application and network conditions for great application experiences. You get tight control over application performance, bandwidth usage, data privacy, and availability of your WAN links - control that you need as your branches conduct greater volumes of mission-critical business.
Cisco converged branch infrastructure
The Cisco 4000 Series ISRs consolidate many must-have IT functions, including network, compute, and storage resources. The high-performance, integrated routers run multiple concurrent services, including encryption, traffic management, and WAN optimization, without slowing your data throughput. And you can activate new services on demand through a simple licensing change.
Cisco intent based networking and digital network architecture (Cisco DNA)
The last few years has seen a rapid transformation and adoption of digital technologies. This puts pressure on the on the Network teams supporting this changing infrastructure - especially when provisioning, managing, monitoring and troubleshooting these diverse devices. Additionally innovations such as Software Defined WAN (SDWAN), Network Function Virtualization (NFV), Open APIs and Cloud Management show great promise in transforming Organizations IT networks. This transformation raises further questions and challenges for the IT teams.
Cisco DNA relies on intent-based networking, a revolutionary approach in networking that helps organizations automate, simplify, and secure the network.
- Gigabit Ethernet port for ultra-fast network speeds
- Rack-mountable feature for convenient and safe installation of the router
- Management capability provides control over the router's setup and configuration
- With 1000Base-T technology, get up to 1000 mbps data transfer rate over twisted pair cable
- Built-in power supply to ensure all components are being supplied with accurate voltage
- Create a wired network with all the PCs connected with this router and share your Internet connection as well as files while checking emails
Specifications
General
- Standard Memory
- 16 GB
- Power Source
- Power Supply
- PoE (RJ-45) Port
- Yes
- Expansion Slot Type
- SFP (mini-GBIC)
Integrated Services Card (ISC)
- Total Number of Expansion Slots
- 6.0
- USB Standard
- USB 2.0 Type A
Mini USB Type B
- Management Port
- Yes
- Total Number of Ports
- 3
- Number of WAN Ports
- 3
- Network Technology
- 1000Base-X
1000Base-T
- Ethernet Technology
- Gigabit Ethernet
- Networking Standards
- IEEE 802.3ah
IEEE 802.3
- Weight (Approximate)
- 6.12 kg
- Form Factor
- Rack-mountable
Wall Mountable
- Height
- 43.2 mm
- Width
- 436.9 mm
- Depth
- 436.9 mm
- Compatible Rack Unit
- 1U
- Product Type
- Router
Manufacturer Website Address
- Manufacturer
- Cisco Systems, Inc
- Product Model
- 4331
- Product Name
- 4331 Router
- Product Series
- 4000
- Brand Name
- Cisco
Price history
- Latest
- AUD 11,757.44≈ USD 8,242
- Oct 2026
- Lowest recorded
- AUD 11,757.44≈ USD 8,242
- Highest recorded
- AUD 11,757.44≈ USD 8,242
- Recorded
- 2026
- 1 price point
- RRP
- Prology AU
- Prology US
- List price
Why buy from Prology
- Tested before dispatchEvery item is checked by our technicians before it ships.
- Warranty includedParts are covered by a Prology warranty – ask us for the terms.
- Fast shippingDispatched from our Australian and US locations.
- Real people, quick repliesQuotes and answers within 1 business day.
Request a quote for ISR4331-DC/K9
Tell us the quantity and condition you need. Prology replies with a firm price and lead time within 1 business day.