DDR4 - module - 16 GB - SO-DIMM 260-pin - 2666 MHz / PC4-21300 - CL15 - 1.2 V - unbuffered - non-ECC - for ThinkCentre M630e M715q (2nd Gen) M720q M725s M75q-1 M820z M920 ThinkPad A485 E14 E15 E49X E59X L390 L390 Yoga L490 L590 P1 (1st 2nd Gen) (non-ECC) P43s P53 (non-ECC) P53s P71 (non-ECC) P72 (non-ECC) P73 (non-ECC) T25 T49X T590 X1 Extreme (1st 2nd Gen) V