'Digital product era about to end', see attachment (9)
I believe the answer is:
appendage
'attachment' is the definition.
(thesaurus)
'digital product era' is the wordplay.
'digital product' becomes 'append' (I can't justify this - if you can you should believe this answer much more).
'era' becomes 'age' (I've seen this before).
'append'+'age'='APPENDAGE'
'about to end see' acts as a link.
This may not be correct. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for appendage that I've seen before include "It hangs on" , "An outgrowth" , "Attached item" , "Addendum" , "Thing attached to another" .)