QNAP 8GB DDR4 SDRAM Memory Module, 8 GB, DDR4 SDRAM, 2400 MHz, ECC, Registered, 288-pin, DIMM RAM-8GDR4ECT0-RD-2400 8 GB DDR4 ECC RAM 2400MHZ, REGISTERED DIMM TDS-16489U TES-1885. QNAP RAM-8GDR4ECT0-RD-2400 8GB DDR4 ECC R-DIMM FOR TDS-16489UTES-1885UTES-3085UTS-168.