just as an FYI, if you do a complete firmware upgrade to the new LPM, decide to go back and try to use the Taserz to go back, the S9 will tell you the firmware is incorrect. I had to go back to an older version of Bitmain firmware that I had downloaded a while back, then go back to Taserz. It seems that Bitmain is onto those of us that were overclocking :p