Specification: 4GB RAM | DDR4 | 260 pin DIMM | SO DIMM | 2933MHz PC4-23400-S | 1.2V The memory is 100% compatible with the HP 15s-fq1514sa. The memory has been tested and released to the device. The memory of the device HP 15s-fq1514sa can be adjusted to max. 64 GB.