"Ken brings us some size and toughness at forward," assistant general manager Mike O'Connell said Saturday. "He's big, he can skate and he's tough."
The 24-year-old Belanger, in his fifth professional season, has a goal and an assist in nine games for the Islanders.
Donato, who plays both center and left wing, has been in the league seven years -- all with the Bruins. He has one goal and three assists in 14 games this season.
For his career, the 29-year-old Donato has 113 goals and 142 assists for 255 points in 465 games. He played for the 1992 U.S. Olympic team and for Harvard, where he was the MVP of the 1989 NCAA Final Four.
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