Well, the process of connecting two PCs via double USB isn't all that difficult. But wait till you see just how simple it is on a Mac. Yeah, yeah, those old commercials regarding Macs and PCs are still somewhat relevant. However, the lines have been blurred to fantastic levels. In fact, transferring files between Macs using a USB to USB cable is oftentimes not necessary. In fact, they have plenty more integrated options than Windows. See WikiHow's guide on this issue for the best results.