Question about Samsung SKK-DD connector

Hi, I'm thinking of buying the same machines - can you tell me if this "connector" is the correct one? Also, are the machines working well for you?
Thank you.

The following models are compatible with this product:

- WF70F x x x
- WF80F x x x
- WF90F x x x
- WW70J x x x

excluding WW70J4473MW
excluding WW70J4273MW

- WW80J x x x
- WW90J x x x
- WW70K x x x
- WW80K x x x

excluding WW80K5210VW

- WW90K x x x
- WW12K x x x