's

[kahhong]

Hello, Which one correct? and Why? thank A lot!!

1.My cousin's laptop's adapter.
2.My cousin's laptop adapter.


Thank You

[Casiopea]

Possessive Noun
1. My cousin's laptop's adapter.
=> the adapter belongs to the laptop, not to the phone.

Adjective
2. My cousin's laptop adapter.
=> a kind of adapter

[kahhong]

so that mean My cousin's laptop's adapter is wrong?

[Bernadetta]

I would say - the adapter of my cousin's laptop. It is grammatically, perhaps, lexically, other words could have been used.