At least your newest one will probably auto sense, that should be enough. As long as you set the homegroup the same and manually configure your ip address to be on the same subnet and have file sharing on you should be able to do it through windows file sharing.
Easier would just be to plug them both into your router as then you can skip configuring IP addresses manually. Whatever you do you shouldn't need software, though I would personally use Fastcopy becuase if Windows file copy craps out, you have to start over. And Fastcopy is faster.
Or use a USB drive if you have one lying around.