Kingston ValueRAM SO-DIMM 4 GB DDR4-2666 Features Buffered memory type Unregistered (unbuffered) CAS latency 19 Component for Notebook Halogen free Internal memory 4GB Internal memory type DDR4 Memory clock speed 2666MHz Memory form factor 260-pin SO-DIMM Memory layout (modules x size) 1 x 4GB Memory ranking 1 Memory voltage 1.2V Programming power voltage (VPP) 2.5V Refresh row cycle time 350ns RoHS compliance Row active time 32ns Row cycle time 45.75ns Operational conditions Operating temperature (T-T) 0 - 85°C Storage temperature (T-T) -55 - 100°C