Originally posted by RSLQK186 I have the X-45 and XP. You cannot calibrate the X-45 in windows. The settings tab does not exist for it. Was brought to my attention by OOZ http://www.hitechcreations.com/forums/showthread.php?s=&threadid=155836 and searched for something to dispute it. Came up dry. If any X-45 users can, please let me know.