Synology ECC RAM (4GB) - D4ES02-4G
Genuine Synology ECC RAM for Diskstation NAS. Product code D4ES02-4G. Taken from a DS-522 unit. DDR4-3200 ECC SO-DIMM. RRP for these is $249, grab this for less than half price! Compatibe with your NAS (taken from https://www.synology.com/en-au/products/DDR4) 23 series: DS1823xs , DS923 , DS723 22 series: RS822RP , RS822 , DS3622xs , DS2422 , DS1522