Yes, the RAM in the Razer Blade Pro 17" (2019) comes with 16GB dual-channel DDR4 2667MHz that is expandable up to 64GB. It also has a 512GB SSD (PCIe 3.0 x4 NVMe, 2280) that is upgradeable to up to 2TB and an open M.2 slot that supports both SATA and PCIe SSDs.
Note: Any damages or issues during installation or as a result of incompatible parts being used are not covered under the warranty. Razer will not be liable for any warranty coverage on any third-party part you may install, and we cannot guarantee compatibility or performance of any third-party parts.