SYOSSET, N.Y. — Alan Quine is such a newcomer to the Islanders that he is still without a locker room cubicle at the team’s practice rink. A folding chair in the middle of the cramped room will have to suffice.

That does not worry Quine, 23, who has burst on the playoff scene with a double-overtime goal in Game 5 and assists on game winners in Games 1 and 6 against the Florida Panthers as the Islanders won a playoff series for the first time since 1993.

Summoned from the Sound Tigers — the American Hockey League team in Bridgeport, Conn. — for the last two games of the regular season after forward Anders Lee sustained a broken leg on April 7, Quine has been an instant fit thanks to his speed and tenacity at both ends of the ice.

As the Islanders prepare to visit the Tampa Bay Lightning on Wednesday night for a second-round opener, Quine is ready to continue his early magic while trying to absorb the sudden swirl of interest around him.