Don’t require power plug adapter while traveling from United States of America (US) USA to Guam.

Here's why you do not need an adapter

The outlet and plug type used in Guam are A and B and in United States of America (US) USA are A and B and they are compatible with each other.

United States of America (US) USA

In United States of America (US) USA, outlets of type A and B are in use.

Type A

Type B

Guam

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

Type A

Type B