The Cisco ASA 5585-X with No Payload Encryption is now obsolete (past End-of-Life and End-of-Support status).
End-of-Sale Date: 2018-06-01
End-of-Support Date: 2023-05-31
Cisco's End-of-Life Policy
You can view a listing of available Firewalls offerings that best meet your specific needs
If you want support information for the Cisco ASA 5585-X with No Payload Encryption documentation, it may be available through Cisco.com Search or in the Cisco Community