I would like to add my experience with my a1g3se board and onboard usb and nec usb pci card.
with os4.1.6 always updated, I have to disable onboard usb in uboot, then I have to disable uhci driver in kicklayout, so the nec usb card works, but
if I copy big files, such as mp3 or films, from usb keydrive (fat 32 8gig), it freezes, sooner or later.
if I use a usb to lan adapter with the adm chip, belkin f5d5050, I get connection to internet for a while but sooner or later there comes a DSI error, then I have to reboot
If I enable onboard usb, no Nec card, the OS4.1.6 won't open, it freezes at the splash screen
If I use OS4.0 on a different HD, no Nec card and onboard USB enabled, I see a fat32 8gig usb keydrive as non dos
the lan adapter seems to work
more tests in the future
PPA1200 (Poor Portable Amiga 1200): BPPC-160MB,
BVision-CGX4, HD 10GB, slim DVD R/W, Asus VW161D
display, 3COM Lan PC card, OS4.1FE
AmigaOne G3-SE 600MHz, 1GB, Radeon 9200 128DDR,
CS4281 sound card, RTL8029, SiI3114, OS 4.1.6 & OS4.1FE