附有 means 'to have something attached, included, or accompanying' — it's used when a document, product, or package comes with additional content (e.g., a manual, a photo, a note). Unlike the English 'attach', which often implies physically sticking or fastening, 附有 is more about 'being provided along with' or 'containing as an addition'. You'll see it in formal or written contexts like 附有照片 (accompanied by a photo) or 附有说明书 (comes with instructions).