A smart card connector has a carriage that prevents inadvertent card pullout and that pushes the card rearward when a user intends to do so. The new quick-change system makes use of a unique slot design for mounting the pads on the plate. In yet another exemplary embodiment, each socket includes three electrical contacts, where one contact is a live wire, a second contact is a neutral wire and a third contact is a ground wire. The IPU is suitable for receiving a set of instructions from the instruction cache and for generating an instruction fetch address upon determining from the set of instructions that the program execution flow requires redirection. The buyer computers include a means for a user to purchase the product described by a digital advertisement.