You Do Need power plug adapter while traveling from American Samoa to Czech Republic.

Here is Why You Need An Adapter

The outlet and plug type used in Czech Republic are C and E and in American Samoa are A, B, F and I. This is how they look like.

American Samoa

In American Samoa, outlets of type A, B, F and I are in use.

Type A

Type B

Type F

Type I

Czech Republic

In Czech Republic, outlets of type C and E are in use.

Type C

Type E