Charles Craft wrote: > You're working with only half the pieces. > The 3M Zif parts come in a socket (with handle) and receptable that > goes in the circuit board. Yes, there are lots of different ZIF sockets out there. I didn't try to design a board that would accept them all, nor did I claim that it would. I did specify a particular ZIF socket in the bill of materials. As with any substitutions not listed in the BOM, you're taking a risk. You have to make sure you know what the relevant specifications are and that the substituted part will meet them. If you're not sure, you can try asking here. If you're still not sure, stick to the specified parts. To minimize someone getting caught by this in the future, I have added a note about the ZIF socket specs to the BOM at http://www.embedinc.com/easyprog/prog7_bom.txt.htm. ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.