Samsung Toshiba 4GB 1Rx8 PC3L 12800S nonECC CL11 DDR3 SODIMM Memory (M471B5173EB0-YK0 G4BC000207S0). 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 environemnt.