Samsung HP 8GB PC3-12800 DDR3-1600MHz non-ECC Unbuffered CL11 240-Pin DIMM 1.35V Low Voltage Dual Rank Memory Module (M378B1G73EB0-YK0 698651-154). This is a seller refurbished part in great working condition. May show signs of cosmetic wear but this should not interfere with the effectiveness of the product. Taken from a working environment.