Samsung 64GB DDR4 SDRAM Memory Module - For Server, Desktop PC - 64 GB (1 x 64GB) - DDR4-2666/PC4-21333 DDR4 SDRAM - 2666 MHz - 1.20 V - ECC - Registered - 288-pin - DIMM M393A8K40B22-CWD

Samsung 64GB DDR4 SDRAM Memory Module - For Server, Desktop PC - 64 GB (1 x 64GB) - DDR4-2666/PC4-21333 DDR4 SDRAM - 2666 MHz - 1.20 V - ECC - Registered - 288-pin - DIMM

Samsung M393A8K40B22-CWD. Component for: PC/server, Internal memory: 64 GB, Memory layout (modules x size): 1 x 64 GB, Internal memory type: DDR4, Memory clock speed: 2666 MHz, Memory form factor: RDIMM, CAS latency: 22, ECC

Technical Specifications:
Memory Size: 64 GB
Memory Technology: DDR4 SDRAM
Memory Voltage: 1.20 V
Number of Modules: 1 x 64GB
Memory Speed: 2666 MHz
Memory Standard: DDR4-2666/PC4-21333
Error Checking: ECC
Signal Processing: Registered
Device Supported: Server, Desktop PC
Number of Pins: 288-pin
Form Factor: DIMM