64gb ECC REG Server RAM kit 2 x 32gb PC4-2133 for HP Workstation Z440 Z640 Z840

Z840 (16 slots, max 32gb per slot RDIMM, 128gb per slot LRDIMM). Z640 (8 slots, max 64gb per slot RDIMM, 128gb per slot LRDIMM). Z440 (8 slots, max 32gb per slot RDIMM). Each lot is a 64gb kit (2 x 32gb pieces) DDR4 ECC Reg Server DIMMs (LRDIMMs) Quad-Ranked 4DRx4 PC4-2133P.

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