My iMac doesn’t have usb ports

Your iMac is which model? The current one has six USB ports and this has been the standard for quite a while. You use it by inserting the appropriate cable into the port.

My guess is you mean something else since iMacs have had USB ports since at least 1998.

And we’ll never hear back from this user.

lkrupp wrote:

And we’ll never hear back from this user.

Possibly. :)