ram: ddr2/ddr3/ddr3L/ddr4=====>521MO/1GO/2GO/4GO/8GO/16GO adata/lexmark/samsung/hynix----neuf/occasion selon la disponibilité pleins de carte mere: hp/lenovo/acer/dell/simens/toshiba=====> hp45 g6- 2000/hp bs15xx/ hp gh8/hp 14-e 15-n 15-r 15-j 17j/hp 450 g2/lenovob590/lenovoG510 LA-9642P/lenovo G580 LA-7982P 20150/lenove S230U I5/acer E1-531 E1-571 V3-571 V3-531 LA-7912P I3 I5 LA-4495/acer5551 AMD /acer7735G 7738G/acerE15 ES1-512 CELERON/dell3521 CELERON/dellVOSTRO 3550 N5110 ......................................selon la disponibilite carcasse:hp/lenovo/acer/dell/simens----neuf/occasion selon la disponibilite