Asset decommissioning and media disposal
Your end-of-life servers, laptops, desktops, printers and network equipment can contain important, confidential or sensitive information. This can include documents, emails, configuration info, etc.
The same applies to CD's, DVD's, USB keys, and other removable media.
Before decommissioning any IT equipment, the physical media should be removed and physically destroyed.
Links
Secure sanitisation of storage media (UK National Cyber Security Centre)
https://www.ncsc.gov.uk/guidance/secure-sanitisation-storage-media