Need to identify a socket to go with the Pro Mate II to program a 18c452. Seems as if there are 2 part numbers.. AC164013 and AC164020. One seems to be called out as a socket, the other as a socket/module. Does anyone know what the difference is, and which one I should be using??? Thanks, Scott F. Touchton 1550 Engineering Manager JDS Uniphase -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads