HP Memory 4GB PC4-2133U 512Mx8 CL15

HP 840821-001 is a 4 GB DDR4 SDRAM memory module for adding memory to a compatible computer. The listing identifies it as one 4 GB module, with a 288-pin DIMM form factor.

It is specified for 2133 MHz operation, also identified as DDR4-2133/PC4-17066. Its CAS latency is CL15, and it uses non-ECC error checking. These details describe the module’s capacity, memory standard and physical format.

The listing does not specify compatible computer models or package contents.