Anything you read that indicates you need that is so hopelessly out of date it is guaranteed to be wrong. Note that posts here can go all the way back to 2012. Make sure to check the date or the “Archives” tag before believing something is valid.
Custom device information is in the Knowledgebase:
The knowledgebase is culled. Significantly out of date information is deleted or updated. You need to watch for that manually in a forum environment.