AVANT DYNET 4GB PC3-12800U DDR3 Low Profile Memory RAM *TESTED & GUARANTEED* | eBay
4GB D4NESO-2666-4G DDR4 260-Pin Sodimm RAM | Memory for Synology
Zopsc DDR2 4GB RAM 800MHz Memory Module for AMD CPU Stable Fast Data Transmission 240PIN for High Anti-Interference and Antistatic for Desktop Computer, Plug and Play at Amazon.com
Kingston Technology Value (KVR16N11S8/4) RAM 4GB 1600MHz PC3-12800 DDR3 Non-ECC CL11 DIMM SR x8 Desktop Memory at Amazon.com