QNAP TVS-471-4G (TVS-x71): High Performance NAS with Intel Processor - Bjorn3D.com
4GB Memory for QNAP TVS-471 DDR3L 1600MHz PC3L-12800 SODIMM RAM (PARTS-QUICK Brand) at Amazon.com
QNAP TVS-471 | QNAPWorks.com
Hypertec Configurator
How to upgrade the RAM on your QNAP NAS and which one to buy – NAS Compares
A-Tech 2GB Module for QNAP TS-x69 Pro x69L x69U TVS-x71 Series IS-400 Pro NAS Servers - DDR3 1600MHz PC3-12800 Non-ECC SODIMM 1.5V Memory RAM (Replacement for QNAP RAM-2GDR3-SO-1600) at Amazon.com