CMS 2GB (1X2GB) DDR2 4200 533MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Acer® Aspire 2920-3A2G12, 2920-302G25, 2930 - A117 at Amazon.com
This is an old Acer Aspire 2920. I found it for a fiver on facebook marketplace as 'not working'. I was able to get it working again by replacing the dead hard
A-Tech 2GB KIT (2 x 1GB) For Acer Aspire Series 1410 (Mid - 2009 DDR2) 1641 1642 1644 1652 1654 1690WLCi 1694 1810 (DDR2) 2420 2920 (DDR2) 2920 Gemston. SO-DIMM DDR2 NON-ECC PC2-5300 667MHz RAM Memory at Amazon.com