In the release notes for 7.13.x:
Notice - Starting from RouterOS version 7.13, significant changes have been made to the RouterOS wireless packages. This is done due to a new product development which will require more disk space for hardware drivers so we had to split it in order to maintain old products alongside the new ones. More wireless packages are yet to come.
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2. Drivers for older wireless and 60GHz interfaces, as well as the wireless management system CAPsMAN, are now part of a separate "wireless" package instead of being a part of the bundle package. This package can be uninstalled if not needed.
All of the additional separate packages are downloadable from
https://mikrotik.com/download/archive as a ZIP file named all_packages-<architecture>-<version>.zip - the architecture and version must match the main RouterOS package you are running.