Cisco ISR4431/K9
ISR 4431 4GE 3NIM 8G FLASH 4G DRAM IPB
Key facts
Overview
ISR 4431 4GE 3NIM 8G FLASH 4G DRAM IPB
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.
- With Gigabit Ethernet, retrieve up to 10x faster than standard Ethernet connectivity and provides high-performance
- Rack-mountable feature for convenient and safe installation of the router
- Features management port for a reliable networking
- With 10/100/1000Base-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
- Memory Technology
- DRAM
- Compatible Rack Unit
- 1U
- Network Technology
- 10/100/1000Base-T
- Ethernet Technology
- Gigabit Ethernet
- VoIP Supported
- Yes
- Expansion Slot Type
- SFP
Network Interface Module (NIM)
- Total Number of Expansion Slots
- 8.0
- Token Ring Port
- No
- USB
- Yes
- Number of Network (RJ-45) Ports
- 4
- Powerline
- No
- Management Port
- Yes
- Total Number of Ports
- 4
- Input Voltage
- 230 V AC
120 V AC
- Power Source
- Power Supply
- PoE (RJ-45) Port
- No
- Product Type
- Router
Manufacturer Website Address
- Manufacturer
- Cisco Systems, Inc
- Product Model
- 4431
- Product Name
- 4431 Router
- Product Series
- 4000
- Brand Name
- Cisco
Reference price history
Recorded reference and list prices over time. Not Prology selling prices.
- Latest
- AUD 33,401.81≈ USD 23,244
- Oct 2026
- Lowest recorded
- AUD 33,401.81≈ USD 23,244
- Highest recorded
- AUD 33,401.81≈ USD 23,244
- Recorded
- 2026
- 1 price point
- RRP
- Prology AU
- Prology US
- List price
Buy or sell Cisco ISR4431/K9
Buying Cisco routers
Prology stocks the Cisco ISR4431/K9 from USD 322 on Prology AU and Prology US. Need more than one, or a different condition? Request a quote for volume pricing.
Selling Cisco routers
Have a spare or decommissioned ISR4431/K9? Prology buys used and surplus Cisco routers — single units or whole lots — and replies with an offer within 1 business day. Sell your ISR4431/K9.
- What is the Cisco ISR4431/K9?
- The Cisco ISR4431/K9 is a Cisco router – ISR 4431 4GE 3NIM 8G FLASH 4G DRAM IPB.
- How much does the Cisco ISR4431/K9 cost?
- The reference price on record is AUD 33,401.81 (Oct 2026). It is a reference figure, not a selling price — the live price is on the Prology store page.
- Where can I buy the Cisco ISR4431/K9?
- It is listed on Prology AU and Prology US. Use the “View on Prology” button above for live price, condition and stock, or request a quote for volume pricing.
- Can I sell a used Cisco ISR4431/K9?
- Yes. Prology buys used and surplus Cisco routers, including the ISR4431/K9. Get an offer — sell outright or trade in against your next order.
Request a quote for ISR4431/K9
Tell us the quantity and condition you need. Prology replies with a firm price and lead time within 1 business day.