4GB DDR3 RAM PC3-12800U non-ECC DDR3 1600 U-DIMM - Tested.
You will get a DIMM with the model number (RMR5040MM5BF9F) that is shown in the picture.
Manufacturing date and pcb colour may differ.
If you have any questions, feel free to contact me.
Please also check out the other hardware on our profile.