premise: At any time upon NIM's request, Seller shall turn over to NIM all books, notes, memoranda, manuals, notebooks, records and other documents made, compiled by, delivered to, or in the possession or control of Seller containing or concerning any Confidential Information, including all copies thereof, in any form or format, including any computer hard disks containing Confidential Information, wherever located, containing any such information, it being agreed that the same and all information contained therein are at all times the exclusive property of NIM and its Affiliates; provided, however, in the event that computer hard disks contain Confidential Information as well as information confidential to the Seller, then Seller shall make copies of all Confidential Information on such computer hard disks and return such copies to NIM and delete the Confidential Information from such computer hard disks.