This product is either discontinued or we cannot get that from suppliers.
Qnap Ecc R-dimm For Ts (RAM32GDR4ECK0RD26), 32GB DDR4 SDRAM Memory Module, DDR4 SDRAM, 2666 MHz, DDR4-2666/PC4-21300, ECC, Registered, NAS Server, 288-pin, DIMM.
Designed for their TS-2888X NAS, the 32GB DDR4 2666 MHz RDIMM ECC Memory Module from QNAP is a single RAM module that will let you upgrade the overall memory capacity of your compatible NAS.