Module Type 288 Pin Unbuffered DIMM Non ECC Capacity 8GBx2 Frequency 4000MHz Data transfer bandwidth 32 GB/s (PC4-32000) Timings CL19-23-23-46 Voltage 1.4V Heat Sink Aluminum heat-sink Operation System Desktop computer with DDR4 Memory Slots Required OS : Windows 10/8.1/8