A6996789-PCW is a Dell Compatible 16GB PC3-10600 DDR3-1333 2Rx 4 1.5v ECC RDIMM (generic for Dell PN# A6996789). This is a 'major brand' module kit (from either Samsung, Micron, Hynix, Infineon, etc.), equivalent in every way to Dell original memory. All PCW modules meet or exceed OEM specifications and JEDEC standards. ...