Hi Guys, thanks for visiting my ad.<br>I am parting out PSI LaserMail 3640 machine.<br>No Formatter, No Engine Control Board, machine booted up and worked before stated boards removal.<br>Envelope Feeder and Conveyor are also available.<br>Let me know what you need.<br>I am OKI Certified Tech, this machine is slightly modified OKI which makes me an expert 