Google sez:

Your search - 68k site:macwireless.com - did not match any documents. Your search - 68040 site:macwireless.com - did not match any documents.

Your search - 68040 site:macwireless.com - did not match any documents.

Your search - 68LC040 site:macwireless.com - did not match any documents.

Click to expand...

But wait! "Powerbook 520" returns:

http://www.macwireless.com/html/help/card_chooser/PB_older.php

http://www.macwireless.com/html/help/compatibility_cards.html

Both of which mention both the 5x0 series, and the 190 (the other PCMCIA-packing 040 Powerbook), and lead back to the card you have above. So presumably there *are* 68k drivers in their downloads.

You could always download the driver and see what error you get when you install or run it.

Still, Orinoco cards ... $10 or so.