KVR26N19S6/4 is a 4Gb (512M x 64-bit) DDR4-2666 CL19 SDRAM (Synchronous DRAM),
1Rx16, memory module, based on four 512M x 16-bit FBGA components. The SPD is programmed to JEDEC standard latency DDR4-2666 timing of 19-19-19 at 1.2V. Each 288-pin DIMM uses gold contact fingers.

Specification