You Do Need power plug adapter while traveling from Trinidad & Tobago to Gabon.

Here is Why You Need An Adapter

The outlet and plug type used in Gabon is C and in Trinidad & Tobago are A and B. This is how they look like.

In Trinidad & Tobago, outlets of type A and B are in use.

Type A

Type B

In Gabon, outlets of type C are in use.

Type C

I am from

going to