The bottom legs of the "R" are hidden by the chip, making it look like a "D" in the photo.
My blue module has a 100 ohm resistor, not a zero ohm resistor. Perhaps the idea was that, unlike a zero ohm resistor, you could force a voltage across the resistor to rewrite the module.
My Atmel parts do not have a 24C512 designation on them, but rather ATML H844 2FB-2 8G7001