Kingston HP 8GB DDR3-1600MHz PC3-12800 non-ECC Unbuffered CL11 204-Pin SoDimm Dual Rank Memory Module (HP24D4U7S8MBP-8 9995643-E07.A00G 854913-001). 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.