Hi all, Thankyou to all who replied with suggestions and information about this extender board, I have looked up the surplus store as suggested and found they do have stock of the 43/86 card edge connectors. Something I have missed in my searches. Another contributor has given me detailed information about the extender board and how it is constructed as he owns one, and it has been very helpful. However if anyone has one they have no further need for I am willing to purchase it!! Ken Goodhew. --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com