Synology DS1515+ Ram Upgrade
ram-upgrade-2

TL;DR
The DS1515+ memory can be upgraded successfully by replacing the factory module with third-party RAM sticks.
- The DS1515+ has two memory slots: an internal slot and an expansion slot.
- Users can install third-party DDR3 RAM to significantly boost total capacity, reaching up to 16GB.
- The recommended module type is an 8GB DDR3 1600 MT/s (PC3-12800) SODIMM.
- Installation requires removing the factory module and carefully inserting the new stick, followed by a system reboot.