Out-of-band management of third party adapter configuration settings in a computing system, the computing system including one or more configurable adapters, including: retrieving, by an out-of-band configuration manager from an out-of-band configuration repository, out-of-band configuration settings for a configurable adapter; determining, by the out-of-band configuration manager, whether the out-of-band configuration settings for the configurable adapter have been updated; and responsive to determining that the out-of-band configuration settings for the configurable adapter have been updated: updating, by the out-of-band configuration manager, in-band configuration settings for the configurable adapter, wherein the in-band configuration settings for the configurable adapter are stored in an in-band configuration repository; retrieving, by the out-of-band configuration manager from the in-band configuration repository, metadata that includes updated in-band configuration settings for the configurable adapter; and sending, by the out-of-band configuration manager to a configuration implementer, the metadata that includes updated in-band configuration settings for the configurable adapter.