You Do Need power plug adapter while traveling from Mozambique to Mauritius.

Here is Why You Need An Adapter

The outlet and plug type used in Mauritius are C and G and in Mozambique are C, F and M. This is how they look like.

Mozambique

In Mozambique, outlets of type C, F and M are in use.

Type C

Type F

Type M

Mauritius

In Mauritius, outlets of type C and G are in use.

Type C

Type G