Samsung 1GB PC3-10600 DDR3-1333MHz ECC Unbuffered CL9 240-Pin DIMM 1.35V Low Voltage Single Rank Memory Module (M391B2873FH0-YH9). 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.