Cop it badly, after lie about fast connection (5,5)

'fast connection' is the definition.
(eg fibre optic broadband)

'cop it badly after lie' is the wordplay.
'badly' is an anagram indicator.
'after' means one lot of letters go next to another.
'lie' becomes 'fibre' (I am not sure about this - if you are sure you should believe this answer much more).
'cop'+'it'='copit'
'copit' is an anagram of 'optic'.
'optic' after 'fibre' is 'FIBRE-OPTIC'.

'about' is the link.