Maker of Aspire laptops (4)
I believe the answer is:
acer
'maker of aspire laptops' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for acer that I've seen before include "Tree or shrub of the maple genus" , "Tree with winged fruit" , "ornamental tree" , "Tree of maple family" , "Plant" .)