Mushkin 991586 DDR3 UDIMM 2GB PC3-10666 9-9-9-24 NONE 1.5V Type: DDR3 Voltage: 1.5V Speed Spec: PC3-10666 Frequency: 1333MHz Capacity Kit Type: Module Module Size: 2GB Module Build: 256Mx64 Chipset Density: 128Mx8 Timings tCL: 9 tRCD: 9 tRP: 9 tRAS: 24 Cooling Technology Heatsink: None