This product is either discontinued or we cannot get that from suppliers.
Qnap RAM-8GDR4ECT0-RD-24, 8GB, Data Transfer Rate 2400Mhz, 288 Pin, PC-19200, Registered ECC, 300Mhz, 1.2 Voltage.
The 8GB DDR4 2400 MHz RDIMM Memory Module from QNAP. Delivering speeds up to 2400 MHz, this module is a memory upgrade designed to improve your system's overall responsiveness and ability to handle data-intensive applications.