Port Adelaide chairman David Koch has put his AFL club's players on notice - play for premierships or play somewhere else.

The Power chairman spoke of his blunt warning at a supporters' function after the Power's heartbreaking extra-time elimination final loss to West Coast at Adelaide Oval.

Koch addressed the players immediately after Saturday night's game and told them the club remained committed to ensuring they have the support they need to succeed.

"But while we make that commitment they've got to make a commitment to us," Koch said.