# \#api-api

**URL:** https://forums.digi.com/tag/api-api/4786.md

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## [Change XB9B-XC to API operation](https://forums.digi.com/t/change-xb9b-xc-to-api-operation/22890)

<div class="topic-metadata">

**Author:** [@rabaggett](https://forums.digi.com/u/rabaggett)\
**Replies:** 2\
**Last updated:** [January 7, 2022, 9:10am UTC](https://forums.digi.com/t/change-xb9b-xc-to-api-operation/22890 "2022-01-07T09:10:17Z")

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Hi, I am trying to use remote I/O with XB9B-XC with firmware 3114 I am having trouble figuring out how to change to API mode… ATAP 1 gives an error, I read that the firmware must be changed? but can’t seem to figure ou…