I knew this was a long shot and most likely wouldn't work, but just for the hell of it I decided to try syncing my 2017 iPod Touch and my 2019 iPhone XI to my 1.5ghz Sawtooth running Leopard. The last iTunes for PPC and Leopard is installed along with all the updates from Software Update. Both devices were plugged into one of my monitor's USB ports, but not at the same time. The monitor's USB cable is plugged into a USB 2.0 PCI card on the Mac. I plugged in the iPod first and after confirming on the iPod that I trusted the Mac...iTunes said an unknown error occurred and wouldn't sync. On the bright side, Leopard was able to import some of my photos from the iPod. I have over 300 photos on there, but Leopard only saw about 107 of them. I tried the iPhone XI next and same results, only this time Leopard only saw 100 photos. Some of the photos Leopard saw on the iPhone were different from the ones it saw on the iPod. I wonder why Leopard can only see a fraction of the photos I have? Well, at least I tried. If I could sync my iPod to my PM G4 instead of my Windows 10 laptop that would've been great, but oh well.