Capacity:32GB*2 Module spec: 288-pin UDIMM Frequency Speed: 4800MHz(PC5-38400) Voltage: 1.1V Environmental Conditions: - Operating Temperature 0°C to 85°C - Storage Temperature -40°C to 95°C System Compatibility: Windows 7/8.1/10/11 Linux kernel 2.4 and later version Mac OS X 10.8 and later version Warranty: 5 years from the date of purchase