The Transcend’s JetRam memory modules are manufactured with true ETT grade. This Laptop RAM featured with Capacity 4GB, RAM Type DDR4, Frequency 3200Mhz, 0°C (32°F) ~ 85°C (185°F) Operating Temperature, 1.2V Voltage and CAS Latency CL22. Transcend’s DDR4 SO-DIMM JetRam memory ensures that both operating temperature and electrical load on the memory controller can be reduced in order to save up to 40% of energy. This latest Transcend 4GB JM DDR4 3200Mhz SO-DIMM Laptop RAM comes with Product lifetime warranty.