Lifecycle record
C1-CISCO4331-K9 EOL & EOSL Dates
Cisco ONE ISR 4331 (3GE,2NIM,1SM,4G FLASH,4G DRAM,IPB)
Lifecycle status
EoS - Sales Ended
C1-CISCO4331-K9 is no longer sold by Cisco; end of sale was 2022-10-28. Support continues until 2027-10-31. Recommended replacement: ISR4331-K9.
Last checked: 2026-06-16
EOL & EOSL Dates and Details
| End-of-Life Announcement (EOL) | 2022-04-29 |
|---|---|
| End of Sale (EOS) | 2022-10-28 |
| End of Service Life (EOSL) | 2027-10-31 |
| Manufacturer | Cisco |
| Category | Routers |
| Product Series | Cisco ISR 4300 |
| Part Number | C1-CISCO4331-K9 |
| Model Number | C1-CISCO4331/K9 |
| Release Date | - |
| Replacement Part Number | ISR4331-K9 |
| Replacement Product Name | Cisco ISR 4331 (3GE,2NIM,1SM,4G FLASH,4G DRAM,IPB) |
Lifecycle Timeline
Recorded lifecycle milestones in date order.
Additional Information
Support milestones and the official source recorded for this model.
| Last Ship Date: HW, License | 2023-01-26 |
|---|---|
| End Of New Service Attachment Date: HW | 2023-10-28 |
| End Of SW Maintenance Releases Date: HW | 2023-10-28 |
| End Of Routine Failure Analysis Date: HW | 2023-10-28 |
| End Of Vulnerability/Security Support: HW | 2025-10-27 |
| End Of Service Contract Renewal Date: HW | 2027-01-23 |
| Last Date Of Support: HW | 2027-10-31 |
| Official EOL Notice | View Official EOL Documentation |
More Cisco ISR 4300 EOL Dates
| Part Number | Product Name | EOL Announcement | End of Sale |
|---|---|---|---|
| C1-CISCO4321-K9 | Cisco ONE ISR 4321 (2GE,2NIM,4G FLASH,4G DRAM,IPB) | 2022-04-29 | 2022-10-28 |
| C1-CISCO4321T-P-K9 | Cisco ONE ISR 4321 (3GE,2NIM,1SM,4G FL,4G RAM,w/PERF) | 2022-04-29 | 2022-10-28 |
| C1-CISCO4331-DC-K9 | Cisco ONE 4331 (3GE,2NIM,1SM,4G FLSH,4G DRAM,IPB) w/ DC PS | 2022-04-29 | 2022-10-28 |
| C1-CISCO4331T-P-K9 | Cisco ONE ISR 4331 (3GE,2NIM,1SM,4G FL,4G RAM,w/PERF) | 2022-04-29 | 2022-10-28 |
| C1-CISCO4351-K9 | Cisco ONE ISR 4351 (3GE,3NIM,2SM,4G FLASH,4G DRAM,IPB) | 2022-04-29 | 2022-10-28 |
| DVD-I43-5-4-K9 | Cisco ISRWAAS software version 5.4 on DVD for ISR4300 Series | 2021-05-05 | 2021-11-03 |
| FL-4320-BOOST-K9 | Cisco Booster Performance License for 4320 Series | 2023-10-26 | 2024-01-26 |
| FL-4320-HSEC-K9 | Cisco U.S. Export Restriction Compliance license for 4320 series | 2022-11-07 | 2023-11-07 |