if I have the x-surf can i use it to connect other amigas using their BNC connector cards to eth bnc connector on the Xsurf card?
nop... the x-surf can only have one port active.
I agree with previous post... a media converter or a plain hub that has both BNC and rj-45 is easiest (and some cable/T's/terminator) are easy to get
Tom UK
PS: in fact... where are you located ? PM me... I have some cheap stuff left over I'm happy to part with
