4GB
Origin Storage 4GB DDR4 2666MHz SODIMM 2Rx8 Non-ECC 1.2V
Hypertec Fujitsu Equivalent 4GB DDR4 2666MHz 1Rx8 UDIMM 288pin
Origin Storage 8GB DDR4 2666MHz SODIMM 2Rx8 Non-ECC 1.2V