http://cgi.ebay.co.uk/ws/eBayISAPI.d...m=290234195633
If you're not going to want to access the net on your Amiga, one of these adapters plus a CF card and the free
Fat95 file system is much cheaper and MUCH faster to transfer data than a network card.
Unfortunately they are NOT hot-plug and play and so you must power-cycle your Amiga when you transfer files. (But it isn't too bad).
Also it takes up one of the two IDE channels of your A4000 and so you may need to dump your CD/DVD or get an IDE splitter.