Lexmark PCB 40X5271 is compatible in the following Printer Models:

Lexmark Multifunction Color Laser

Lexmark X736de (7526-476)
Lexmark X738de (7526-676)
Lexmark X738dte (7526-676)

Lexmark Color Laser

Lexmark X736de (7526-476)
Lexmark X738de (7526-676)
Lexmark X738dte (7526-676)