This product is either discontinued or we cannot get that from suppliers.
QNAP modules RAM-1GDR3-SO-1333, 1 GB, Interface 204-pin, Speed 1333 MHz, DDR3-1333 RAM module.
The 1GB 204-Pin DDR3-1333 RAM Module from QNAP is designed for QNAP modules, including TS-x69L, TS-469U-RP, TS-869U-RP, TS-269 Pro, TS-469 Pro, TS-569 Pro, TS-669 Pro, TS-869 Pro, TS-459 Pro II, TS-559 Pro II and TS-659 Pro II NAS.