HP 863492-001 is an 8 GB DDR3L memory module for adding RAM to supported systems. Its 204-pin SO-DIMM format is intended for compact memory slots, and the exact part number is listed by HP's distributor as 863492-001.
The module runs at 1600 MHz (PC3L-12800) with CL11 timing and a rated voltage of 1.35 V. It is unbuffered and non-ECC, details that describe its memory interface and error-checking configuration.
The listing names the HP t730 and HP Flexible t520, t620, and t620 PLUS among compatible systems. This 8 GB module is a specific DDR3L SO-DIMM option for those models.