Synology 4GB DDR4 SDRAM Memory Module - For Storage Server - 4 GB DDR4 SDRAM - ECC - Unbuffered - 260-pin - SoDIMM Enables efficient and smooth execution of all your heavy-duty applications with maximum productivity 4 GB memory allows you to have more programs open at a time DDR4 SDRAM interface synchronizes electrical and clock signals for an efficient data transfer rate 260-pin for faster, dependable performance and better access to data and information Storage Server device support for your ram module to allow maximum efficiency and dependability SoDIMM form factor with 260-pin and 4 GB memory size effectively reduces minimizes the load on the server memory BUS to ensure maximum productivity Unbuffered signal processing provides reliable optimization for your required applications to allow maximum usability