Is there a USB device for SmartMedia that is supported by Linux/Knoppix for both reading and writing?

I have a Microtech ZiO, but it can only be "mounted" read-only. I'd like something that supports read/write access, so that I can use it with Knoppix to rescue files from a broken system (I have about 256MB of capacity scattered among multiple SmartMedia cards)

I'm willing to build a custom Knoppix CD, but I'd rather buy a USB device that just works.