You Do Need power plug adapter while traveling from Zambia to Laos.

Here is Why You Need An Adapter

The outlet and plug type used in Laos are A, B, C, E and F and in Zambia are C, D and G. This is how they look like.

Zambia

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

Type C

Type D

Type G

Laos

In Laos, outlets of type A, B, C, E and F are in use.

Type A

Type B

Type C

Type E

Type F