64GB Kit (4x 16GB Modules) | DDR4 2400 MHz ( PC4-19200R ) | DDR4 DIMM ( 288-pin ) | ECC RDIMM (Registered DIMM) | 1Rx4 - Single Rank x4) | 1.2V - DDR4 Standard VoltageHigh performance Memory RAM upgrade designed for Supermicro SYS-6019P-WTThis item is ECC Registered memory and is NOT compatible with Desktop or Laptop systems which only support N A-Tech 64GB Kit (4x16GB) Memory RAM for Supermicro SYS-6019P-WT - DDR4 2400MHz PC4-19200 ECC Registered RDIMM 1Rx4 1.2V - Server