Ideally, I'd like the SDS box posted, as I have had one before and know it works with my equipment. This 'Laptop to multiplexer 232 to 485 converter' i'm not sure if it will, although the connections are the same.

I'm not an electronics man, so not sure what exactly is going on in the SDS box, but it must be doing something - mine is in pieces, so can't see which wires went where or anything.

I've come across that site before - does it belong to a member on this or anohter MB forum? Asking as it'd be nice to know about if the cable will work, and if not, about a refund.