The lenovo 4X70S69154 RAM module is compatible with Lenovo ThinkPad P1 20MD/P1 20ME/P52 20M9/P52 20M/P72 20MB/P72 20MC/X1 Extreme 20MF/X1 Extreme 20MG. This non-ECC module has 32GB DDR4 SDRAM with 2666 MHz speed, for improved performance without straining the system’s power needs. The 260-pin SODIMM unbuffered memory module has a supply voltage of 1.2 V..Unbuffered.Memory voltage: 1.2 V.32GB SDRAM module.RAM module is compatible with Lenovo ThinkPad P1 20MD, P1 20ME, P52 20M9, P52 20M, P72 20MB, P72 20MC, X1 Extreme 20MF and X1 Extreme 20MG.Delivers 2666 MHz memory clock speed.Non-Error Correcting Code (ECC) memory.Form factor: 260-pin SoDIMM.Memory specification compliance: PC4-21300.Features DDR4 technology.32GB RAM module is compatible with Lenovo ThinkPad P1 20MD/P1 20ME/P52 20M9/P52 20M/P72 20MB/P72 20MC/X1 Extreme 20MF/X1 Extreme 20MG.