This product is either discontinued or we cannot get that from suppliers.
Qnap RAM-2GDR3EC-LD, Capacity 2 GB, DRAM memory module, DDR3 SDRAM, Form Factor DIMM 240-pin, Speed 1333 MHz (PC3-10600).
Qnap ECC LONG-DIMM RAM RAM-2GDR3EC-LD-1600 2GB DDR3-1600 Module (for ECx79, ECx80) 2GB.