You Do Need power plug adapter while traveling from Congo to Abu Dhabi.

Here is Why You Need An Adapter

The outlet and plug type used in Abu Dhabi is G and in Congo are C, D and E. This is how they look like.

Congo

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

Type C

Type D

Type E

Abu Dhabi

In Abu Dhabi, outlets of type G are in use.

Type G