This product is either discontinued or we cannot get that from suppliers.
Qnap RAM-2GDR3T0-SO-16, 2GB, Ram 1600 MHZ, Speed PC4-19200 (1600 MHz), DDR4, 260-Pin SO-DIMM.
Designed for their TS-x73 series, TVS-x73e/x73 series, TS-932X, and TS-832X, the 2GB DDR4 2400 MHz SO-DIMM Memory Module from QNAP is a single RAM module that will let you upgrade the overall memory capacity of your compatible NAS.