A-Tech 4GB Module for Acer Aspire E1-571-6680 Laptop & Notebook Compatible DDR3/DDR3L PC3-12800 1600Mhz Memory Ram (ATMS269707B12034X1) at Amazon.com
Acer Aspire 15.6" Laptop, Intel Celeron 1000M, 500GB HD, DVD Writer, Windows 8, E1-531-10004G50Mnks - Walmart.com
Acer Aspire E1-571 Intel Core i3-3120M CPU @ 2.50GHz, 4 GB RAM, 500 GB HDD with Microsoft Windows 10 Professional and Microsoft Office 2010 Home & Business.
OFFTEK 4GB Replacement Memory RAM Upgrade for Acer Aspire E1-571 (DDR3-12800) Laptop Memory at Amazon.com