ISR4221-AX/K9 - Cisco 4000 Family Integrated Services Router
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ISR4221-AX/K9 Overview
ISR4221-AX/K9 Exact Bundle Identity
ISR4221-AX/K9 is the Cisco ISR 4221 Application Experience bundle with APP and SEC licenses. The base hardware is the ISR 4221 branch router with two onboard Gigabit Ethernet interfaces, two NIM slots, 8 GB flash and 4 GB DRAM.
Bundle and performance boundary
Licensed bundle: AX bundle: APP and SEC technology licenses; no UC voice license or voice DSP is identified for this PID. Platform performance: 35 Mbps base platform performance, upgradeable to 75 Mbps with the documented performance license. Performance-license values are platform limits, not a promise of application throughput in every configuration.
Small-branch application and security boundary
Confirm that the order is specifically for the AX bundle and not a base ISR4221/K9 or SEC-only bundle. Validate current entitlement transfer rules, required throughput, WAN module inventory and cryptography eligibility. Cisco states that ISR4221 does not support the UC voice bundle, so voice DSPs, CUBE sessions and UC licensing must not be inferred from this PID.
Lifecycle and migration
Cisco lists the ISR4221 product line as end of sale with support ending 30 November 2028. Cisco Catalyst 8200L family is the lifecycle migration reference for the base ISR4221 platform. Treat the replacement as a migration starting point: interface modules, voice resources, software features, rack power and configuration must be mapped rather than assumed compatible.
Related ISR 4000 bundle records
- ISR4351-V/K9 - compare chassis capacity, bundle entitlement and lifecycle migration.
- ISR4431-V/K9 - compare chassis capacity, bundle entitlement and lifecycle migration.
- ISR4451-X-AX/K9 - compare chassis capacity, bundle entitlement and lifecycle migration.
Official Cisco evidence: Cisco Secure Boot PID List and Cisco platform and licensing documentation.
ISR4221-AX/K9 Specification
| Exact model / SKU | ISR4221-AX/K9 |
| Exact orderable PID | ISR4221-AX/K9 |
| Bundle identity | Cisco ISR 4221 Application Experience bundle with APP and SEC licenses |
| Hardware platform | ISR 4221 branch router with two onboard Gigabit Ethernet interfaces, two NIM slots, 8 GB flash and 4 GB DRAM |
| License boundary | AX bundle: APP and SEC technology licenses; no UC voice license or voice DSP is identified for this PID |
| Documented performance | 35 Mbps base platform performance, upgradeable to 75 Mbps with the documented performance license |
| Lifecycle status | Cisco lists the ISR4221 product line as end of sale with support ending 30 November 2028 |
| Procurement gate | Verify PID, serial, installed modules, entitlement state and support eligibility |
| Source match | ISR4221-AX/K9: exact Cisco PID and bundle identity verified |
| Official manufacturer reference | Cisco Secure Boot PID List |
ISR4221-AX/K9 Warranty
 | Product Quotation |  | Condition and Packaging |
 | Technical Support Enquiry |  | Returns and Replacement |
 | Shipping Arrangements |  | Warranty Terms |
ISR4221-AX/K9 FAQ
What is ISR4221-AX/K9?
ISR4221-AX/K9 - Cisco 4000 Family Integrated Services Router is a CISCO Router ISR 4000 product supplied by YYST Global for enterprise IT procurement and infrastructure projects.
Is ISR4221-AX/K9 available from YYST Global?
Contact YYST Global to confirm availability for ISR4221-AX/K9, the required quantity, exact configuration, delivery destination and current lead time before ordering. A product listing does not confirm current inventory.
What is the price of ISR4221-AX/K9?
The current reference price for ISR4221-AX/K9 is US$ 930.00. Final pricing can change based on stock, quantity, configuration and delivery destination.
What should buyers verify before ordering ISR4221-AX/K9?
Confirm the exact model suffix, interfaces, power option, software or licenses, included accessories, new factory sealed, warranty and destination requirements before ordering ISR4221-AX/K9.
Related products
Related ISR4221-AX/K9
ISR4221/K9 USED Cisco ISR 4221 Router
ISR4221/K9 is the base Cisco ISR 4221 order described with two Gigabit Ethernet interfaces, two NIM slots, 8 GB flash, 4 GB DRAM and IP Base. See the verified interface, replacement and lifecycle boundaries before requesting a quote.
ISR4221-SEC/K9 - Cisco ISR 4221 SEC Bundle with SEC lic
Cisco ISR4221-SEC/K9 is the ISR 4221 router bundle with a SEC license. The platform provides two onboard Gigabit Ethernet interfaces and two NIM slots; its separate performance license raises the published aggregate tier from 35 to 75 Mbps.
Cisco ISR4221X/K9 Branch Router with 8GB DRAM
ISR4221X/K9 is the 8GB-DRAM version of the Cisco 4221 branch router, with two onboard Gigabit Ethernet interfaces and two NIM slots. Cisco ended sale in November 2023; final support is November 30, 2028, subject to entitlement.
ISR4461/K9 - Cisco 4000 Family Integrated Services Router
ISR4461/K9 is Cisco's base ISR 4461 router with two 10-Gigabit and four Gigabit onboard interfaces, three NIM slots and three service-module slots. Its 1.5 Gbps default aggregate forwarding tier is distinct from the separately licensed 3 Gbps tier. Cisco ended sale January 20, 2025; final support is January 31, 2030 under applicable entitlement terms.
ISR4431/K9 - Cisco 4000 Family Integrated Services Router
ISR4431/K9 is the Cisco ISR 4431 base router order with four onboard Gigabit Ethernet interfaces, three NIM slots and one ISC slot. Cisco ended sale on November 7, 2023; general software maintenance ended August 31, 2025. Support eligibility and installed performance licenses require verification before procurement. The manufacturer family image is representative, not a photograph of a supplied unit.
ISR4431-DNA - Cisco 4000 Family Integrated Services Router
ISR4431-DNA is the Cisco ISR 4431 router order with a DNA subscription, four Gigabit interfaces and three NIM slots. Verify the quoted software tier and term; hardware support ends November 30, 2028.
Cisco ISR4351-SEC/K9 3GE,3NIM,2SM,4G FLASH,4G DRAM,Security Bundle
ISR4351-SEC/K9 is the Cisco ISR 4351 security bundle identified in the official ordering row as including the SEC license. See the verified interface, replacement and lifecycle boundaries before requesting a quote.
ISR4451-X-SEC/K9 Cisco ISR 4451-X Security Bundle Router
ISR4451-X-SEC/K9 is a Cisco security-bundle router with four Gigabit Ethernet interfaces and 1 Gbps default aggregate throughput. The 2 Gbps performance license is separate; review final IOS XE train and support limits before retaining this legacy platform.