Adding to my list of compatible devices:
- Garmin Nuvi 1300 (binded to massstorage.class, was able to charge device and access its file system).
I'd like to try a USB printer at some point. I assume that to have any chance at working it would need to support Postscript output. I've got 17 printers around the office but all are big workgroup-class devices connected via Ethernet, not sure if I have any USB printers anywhere, haha.

Side note, it looks like Poseidon uses a small amount of chip memory for something? With my graphics card I usually have 97% free. Doing a fresh boot and then opening nothing but Poseidon/Trident Prefs I notice that goes down to 95%. At a quick glance with SysInfo and Scout I couldn't find the cause. All my libraries/devices/etc. appeared to be loaded in 32-bit fast. Odd, but no big deal.