AIR-AP1840I-N-K9 Cisco Aironet 1840I Indoor WiFi 5 Access Point

AIR-AP1840I-N-K9: Replacement performance baseline

AIR-AP1840I-N-K9 keeps the N regulatory-domain letter and K9 controller-based identity in its complete order code. Retain the N-domain destination evidence and reviewer; a shared 1840i enclosure does not establish regulatory equivalence.

For N-domain K9 deployment, confirm regulatory approval before assigning the controller country. Test the 5 GHz four-stream SU path, representative MU clients, 2.4 GHz service and wired uplinks under the supported controller release, then retain the measurements as the replacement baseline.

Evidence required before acceptance

Create an N-K9 baseline that can be reused during replacement: approved destination, controller release, 5 GHz four-stream test, representative MU clients, 2.4 GHz result, both wired links and mounting location. Record the measurement method so a future team compares like with like.

Procurement decision

Use the measured N-K9 baseline to decide whether a spare is equivalent in the intended deployment. Cisco records the 1840 series as end of sale on May 1, 2022 and end of support on April 30, 2027.

Closest ordering comparisons

• AIR-AP1840I-D-K9C - compare regulatory domain and controller image.
• AIR-AP1840I-S-K9C - compare regulatory domain and controller image.
• AIR-AP1840I-Z-K9C - compare regulatory domain and controller image.

Official evidence: Cisco Aironet 1840 data sheet; Cisco 1840 getting-started guide; Cisco 1840 lifecycle record; and Cisco wireless compliance lookup.