2GB RAM Memory for Acer Aspire E1-571-6492, E1-421, One (521), One (522), One (533) Black Diamond Memory Module DDR3 SO-DIMM 204pin PC3-10600 1333MHz Upgrade - Walmart.com
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 Core i3 i3-2328M, 500GB HD, DVD Writer, Windows 7 Home Premium, E1-571-32324G50Mnks - 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.