Well Jodie, If those ladies have your type of machine then I would go with what they are telling you.
I really don't know.
I just looked that up your machine on a web site and that was in the description about the USB cord.
My machine is a brother but it's nothing like your 750D.
Mine is a 6 needle and a BMP9.
I'm sorry if I gave wrong information.
I checked again and this is the site I looked at.
http://www.brother-usa.com/homesewin...ODUCTID=PE750D
It does say memory card and it also says USB.
I apologized again.