Stephanie is on vacation and no access of the email.
Regarding the picture you sent in, may I know the SN number of the handpiece? Does they match the number on the paper work?
If yes, M200-M/M4 should be the one on top and the bottom one is M800-M/QD, HP3018 is the coupler attaching with the bottom handpiece.
If there any question, please feel free to email me.
Thank you so much!