Law / Karta Polaka (Card of the Pole, Polish Card) - working legally in all EU countries? [3]

Hello. I am a resident from Argentina and I have a question. I am eligible for applying for the Karta Polaka, but I have a doubt: Am I legally allowed to work in the rest of the EU countries as well? Or this card is only good for Poland? Anyone has gt a Karta Polaka (Card of the Pole, Polish Card, etc)??? I dont know if this is the right place to make this question, but if you could help me it would be great! Thanks a lot.

Sebastian