CISCO AIR-AP1840I-S-K9C Aironet 1840 Series Access Points

AIR-AP1840I-S-K9C: Primary-controller continuity record

AIR-AP1840I-S-K9C keeps the S regulatory-domain letter and K9C factory Mobility Express identity in its complete order code. Match the S-domain purchase line and serial to the approved country before radios are enabled.

For the S-domain K9C order, preserve the designated primary AP, backup procedure and management credentials separately from the ordinary access-point configuration. Test loss of the embedded controller role and record how service returns, because factory Mobility Express capability does not replace a documented continuity design.

Evidence required before acceptance

Name the primary and backup administrators, record where the Mobility Express configuration is stored, and prove that the chosen recovery procedure restores SSIDs and authentication. Include the S-domain authorization with the serial so a later spare swap cannot silently introduce a different regulatory identity.

Procurement decision

Use this PID where an S-domain Mobility Express factory image is explicitly required and continuity ownership is assigned. 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-S-K9 - compare regulatory domain and controller image.
• AIR-AP1840I-T-K9 - compare regulatory domain and controller image.
• AIR-AP1840I-G-K9 - 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.