Just a suggestion: The easiest way to access USB 2 storage media from any pre OS X Mac will be a device like a Network Storage Link for USB 2.0. At a reasonable price you will access harddisk drives or flash memory and get the benefit to share the files via network. No need for new drivers or even USB 2 host adaptors for Nubus - the storage bridge might be cheaper than the Asante Fast Ethernet Nubus Card you might want ;-)
Someone with access to the needed gear might check if such setup is operational for general liberation purposes, please! Results should be published in the 68kMLA Wiki.
Someone with access to the needed gear might check if such setup is operational for general liberation purposes, please! Results should be published in the 68kMLA Wiki.