Electronic module and heat dissipation assembly

An electronic module, comprising:

• a heat dissipation assembly, comprising:
• a heat fin having a bottom and plurality of fins, wherein the fins are vertically arranged on the bottom, each of two opposite sides of the bottom has a pair of first screw holes and a pair of second screw holes, and the pair of first screw holes are between the pair of second screw holes;
• a base having a bottom plate and a pair of side walls, wherein the pair of side walls extend vertically from two opposite sides of the bottom plate, each of the side walls has a pair of third screw holes and a pair of fourth screw holes, and positions of the pair of third screw holes correspond to positions of the pair of first screw holes and positions of the pair of fourth screw holes correspond to positions of the pair of second screw holes;
• a plurality of fasteners, passing through the corresponding pairs of third screw holes and first screw holes or passing through the corresponding pairs of fourth screw holes and second screw holes;
• and
• an electronic component disposed between the bottom of the heat fin and the bottom plate of the bases,
• wherein the pair of third screw holes and the pair of fourth screw holes have different heights from the bottom plate,
• wherein the pair of first screw holes and the pair of second screw holes have a same height in an extending direction of the fins.