The Rangers have no power play, but they do have Powe.

Darroll Powe still might not be able to help the Rangers on the ice as he inches closer to returning from his second concussion of the season, but the injured forward does have firsthand knowledge of the daunting task the Blueshirts are facing — an 0-3 hole against Boston in the Eastern Conference semifinals.

Powe, along with Rangers teammate Arron Asham, was a member of the Flyers in 2010 when they became just the third team in NHL history to take a playoff series after dropping the first three games, winning four straight against Boston before eventually losing to Chicago in the Stanley Cup Finals.

“Obviously it was a memorable series,” said Powe, who hasn’t played since Joel Ward’s inadvertent elbow struck him in the head in Game 3 of the opening round against Washington. “What I remember is going in every day and just focusing on the game at hand. We obviously can’t win four games (Thursday) night. So we just have to focus on the task, which is coming out strong on our first shift. You go shift by shift and just chip away. You have to try to win every shift, and that’s how you’re going to get back in the series.

“It was a pretty special feeling, for sure. It builds a lot of character and we have a lot of character in this room. I know we’re going to come out hard (Thursday) night and put our best effort out there and do the right things that are going to help us win the hockey game.”

Powe, who was acquired in February from Minnesota, has skated the past four days, but the key penalty killer replied, “I don’t know,” when asked if he was close to rejoining the lineup. Injured teammates Ryan Clowe (concussion) and Marc Staal (eye) also took part in an optional practice on Wednesday for the Rangers, who might be without defenseman Anton Stralman in Game 4 after he left with an undisclosed injury Tuesday night.