Wozniak's first to develop an Apple product complete with IT support widget (15)
I believe the answer is:
whatchamacallit
'widget' is the definition.
(I know that widget can be written as whatchamacallit)
'wozniak's first to develop an apple product complete with it support' is the wordplay.
I cannot quite understand how this works, but
'first' could be 'i' (I in Roman numerals eg Elizabeth I) and 'i' is located in the answer.
'an' could be 'a' and 'a' is found in the answer.
'product' could be 'call' (call is a kind of product) and 'call' is found in the answer.
'with' could be 'w' (abbreviation) and 'w' is located in the answer.
'it' could be 't' (abbreviation. e.g. in 'tis) and 't' is located in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for whatchamacallit that I've seen before include "unmemorable thing" , "whatever it is" , "unknown label?" .)