Hi. Don't know, sorry. I just took the unit off to a trusted computer repair shop. They bought it somewhere from the "East". My unit is a DVD M2 5.6. Once you read your model it will be easier to find the correct laser. I found many sites in Europe selling my "SF-HD4" laser.
The ribbon in this new one was not as long, but it worked right away yesterday.
Good luck. By the way, I've burned many, many DVD+R DL for nothing. the problem was the laser that was going dead...It still could read the original until last year, though...