You Do Need power plug adapter while traveling from Puerto Rico to Senegal.

Here is Why You Need An Adapter

The outlet and plug type used in Senegal are C, D, E and K and in Puerto Rico are A and B. This is how they look like.

Puerto Rico

In Puerto Rico, outlets of type A and B are in use.

Type A

Type B

Senegal

In Senegal, outlets of type C, D, E and K are in use.

Type C

Type D

Type E

Type K