4GB RAM Memory for Acer Aspire 5742G (DDR3-10600) - Laptop Memory Upgrade from OFFTEK: Amazon.ca: Electronics
Acer Aspire 5742 Series - W7 - Intel Core i5-480M / 2.66 GHz - 4 GB R
Specs Acer Aspire 5742G-484G50Mnkk DDR3-SDRAM 39.6 cm (15.6") 1366 x 768 pixels 4th gen Intel® Core™ i5 4 GB 500 GB Windows 7 Home Premium Black Notebooks (LX.R8Z02.010)