Lexmark
40X3962
is compatible in the following Printer Models:
Lexmark Paper Handling
X85xe, X86xe Booklet Finisher-2/3-Hole (7500-FNB)
C935, X940e, X945e Booklet Finisher (7510-FNB)
C950, X95x Booklet Finisher (3-Hole) (7558-FNB)
C950, X95x Booklet Finisher (4-Hole) (7558-FNB)
C950, X95x 3500-Sheet Finisher (3-Hole) (7558-FNS)
C950, X95x 3500-Sheet Finisher (4-Hole) (7558-FNS)