QNAP RAM-4GDR4-LD-2133, 4 GB, 1 x 4 GB, DDR4, 2133 MHz, 288-pin DIMM, Green QNAP RAM-4GDR4-LD-2133. Component for: PC/server, Internal memory: 4 GB, Memory layout (modules x size): 1 x 4 GB, Internal memory type: DDR4, Memory clock speed: 2133 MHz, Memory form factor: 288-pin DIMM, Product color: Green