A combination of fan and heat sink includes a fan (10), a heat sink (20)
and four fixtures (30). The fan defines four holes (12) in four corners
thereof respectively. The heat sink has a plurality of parallel fins
(24). Each fixture includes a post (32) inserted into the corresponding
hole of the fan, a pressing portion (36) pressing the fan toward the heat
sink and a locking leg (34) interlocking with outmost fins.