HP N77402-005 is an 8 GB DDR4 SODIMM memory module for adding memory to a compatible computer. It is listed as a compact notebook-style memory module, with its exact identity tied to the N77402-005 part number.
The module is specified as DDR4-3200 and 1.2 V. These details describe its memory generation, data rate and operating voltage. The capacity is 8 GB, providing additional memory for a computer that supports this module type and specification.