Kingston 512M x 64-bit 4GB DDR3-1600 PC3-12800 CL11 SDRAM memory module, based on sixteen 256M x 8-bit DDR3-1600 FBGA components. The SPD is programmed to JEDEC standard latency DDR3-1600 timing of 11-11-11 at 1.5V. This 204-pin SODIMM uses gold contact fingers and requires +1.5V.