MEMORIA DDR4-2133 PC4-17000 2133MHZ KINGSTON 4GB 512MX64 1.2V CL15 KVR21N15S8/4 MEMORIA DDR4-2133 PC4-1700 2133MHZ KINGSTON 4GB 512MX64 1.2V CL15 KVR21N15S8/4