The RAM in this notebook can be upgraded to a maximum of 32 GB by adding a second 16 GB DDR4-3200 MHz memory module, as it has two memory slots supporting up to 16 GB each. It does not support 64 GB RAM.

This is based on the HP 255 G10 with AMD Ryzen 5 7530U having two memory slots and supporting 2 x 16 GB modules for a total of 32 GB maximum memory capacity. The Crucial memory report and HP service manual confirm this configuration and limit. Therefore, upgrading beyond 32 GB is not supported.