64GB Total. 4pcs 16gb DDR4, 2133MHz, ECC, CL15, 2R, X4, 1.2V registered, DIMM, 288-pin Brand Computer Memory Solutions LIFETIME WARRANTY BY Computer Memory Solutions
Compatible with: HP/Compaq ProLiant DL120 Gen9 (G9) 777424-B21; 777425-B21; 777426-B21; 777427-B21; 777428-B21, HP/Compaq ProLiant ML110 Gen9 (G9) 777160-001; 777161-001; 799111-S01; 807879-S01; 807880-S01
Maximum Memory: 256 GB LRDIMMs 256 GB Reg
ECC RDIMMs Expansions: 8 Socket (s) Memory will clock down to run at optimal speeds depending on processor model and number of modules installed. See latest ProLiant QuickSpecs for processor models and supported memory speeds. This system supports Registered ECC (RDIMM) or Load Reduced (LRDIMM) memory. Mixing RDIMM and LRDIMM is not supported within this system. If only one processor is installed, only 8 DIMM slots are available. When populating with two processors 16 DIMM slots are available.