OWC 16GB UPGRADE: Consists of 2pcs of 8GB DDR3 1600 PC3-12800 CL11 2Rx8 240-pin 1.5V Workstation Server ECC DIMM memory compatible with Synology NAS models DS3615xs, RS3614RPxs, RS3614xs And RS3617xs. 100% COMPLIANT: JEDEC-Standard and ROHS Compliant. Warranty-Safe Upgrade. Designed and Tested to Meet or Exceed all Manufacturer OEM Specs. EASY INSTALLATION: In Most Cases, Installing Memory is an Easy DIY project. Watch our OWC Basic Installation Video for Help. INDUSTRY LEADING: Consumer-friendly Advanced Replacement Program and Limited Lifetime Warranty, which includes Free Tech Support by Other World Computing. Replacement for Synology part number RAMEC1600DDR3-8GBX2.