If I don't have the USB part of an ihome wireless mouse, can I still get the software online to make it work anyway? The model number IH-M17OZR.
No, you cannot make the mouse work if you are lacking the wireless USB device. That is a necessary part of the mouse that needs to be connected or else you will not be able to connected the mouse to PC or laptop even if one of these is wireless powered. Without the USB device, the mouse will simply not work even if the software is downloaded from the Internet.