Ethernet shield - missing components

Does anybody know where, physically, the 4 leg chip that converts the raw 'reset to ‘reset_w’ is on the 2010 rev 5 version of the Ethernet shield?
I’ve got a couple of these shields that are supposedly the genuine article but for the life all I can find is 4 unused solder pads in the bottom left corner of the PCB next to the reset button itself.