The compatibility is a beta feature focused on third party search plugins that use Ajax / Autocomplete for displaying results as autocomplete. Usually free plugins do not search for custom taxonomies. If you are using a paid plugin probably you can keep the integration disabled.

Habilitar integração com plug-ins de pesquisa ajax: ative para habilitar. Se o usuário digitar um nome de marca, ele será incluído nos resultados do preenchimento automático#

Preenchimento automático do formulário de pesquisa:#

- Show brands and products from the searched brand: When customer type a brand name it will be shown the brands that matches with the keyword and also all products from the brand. Ex: if user types apple, it will show Apple and the Apple Products (limited to 10 entries)
- Show only brands list that matches with the search: It shows only the brands and not the products inside the brand
- No integration: Disable the feature

Se o seu plugin não for compatível, você pode abrir um tíquete de suporte e verificamos se possível integrar em versões futuras

Current supported plugins:
- Advanced Woo Search - Free
- YITH Ajax Search - Free