Kingston 512M x 64-bit 4GB DDR3-1066 PC3-8500 CL7 SDRAM memory module, based on sixteen 256M x 8-bit DDR3-1066 FBGA components. The SPD is programmed to JEDEC standard latency 1066Mhz timing of 7-7-7 at 1.5V. This 204-pin SODIMM uses gold contact fingers and requires +1.5V.