HP 803660-091 is an 8GB DDR4 memory module for servers that support this type of unbuffered memory. Adding memory can give a supported system more room for active workloads.
It is supplied as 1 × 8GB and runs at DDR4-2133 (PC4-17000). The module is single-rank x8 and uses ECC error correction in an unbuffered, 288-pin DIMM format. Its listed operating voltage is 1.2 V, with CL15 timing.
This is a standard HPE memory kit identified by assembly number 803660-091. The specifications describe the module format and operation; supported systems must accept unbuffered DDR4 DIMMs.