# Arrays finder

* Array Finder enables customers to search a design target list against Illumina's commercial array database to determine which array best provides the content they need.
* Users can enter input in the UI or upload an input file.
  * If users upload a file, they can download the input template.
* Users can also select a major genome build for the species. For example, Homo sapiens searches can target build 37 or 38. Select the target build up front.
* Searching 50k targets can take up to 30 seconds.
* When the search is complete, users land on a summary page. The summary shows overlapping targets between the user input and each commercial base. User can also get details like the target build that was used by clicking "Export details" button.
* Users can download either the search summary or detailed search results for each chip.
* If any targets are excluded from the search, they are listed in the `excludedContent` file.
* If users want to search for a locus that is not a known target, use a genomic location search.