Toopower New Replacement Notebook Battery for Acer Aspire E1-421 E1-431 E1-471 E1-521 E1-531 E1-571 4551G 4771G Acer TravelMate 4370 5335 5340 7340 AS10D3E AS10D41 AS10D51

[ ♫ - Intro Music Plays -] The first step is to make sure the laptop is powered off, unplug the power supply and remove the battery The first screw I remove is the screw that holds in the DVD Writer For this you need a Philips screw driver Once the screw is removed, it is easy to slide out the DVD writer unit and set it aside I then remove the lower panel that covers the Hard Disk Drive, RAM and wireless card This panel has two Philips screws holding it down With the screws removed, you can use a plastic spudger or other soft material to pry the cover open And then simply remove it with your hands For the RAM upgrade, I made sure I bought the same type of RAM so that it would match perfectly In my case, this was a 4Gb module of Hynix DDR3 RAM The bottom RAM module has to be inserted first before inserting the second module on top With the RAM inserted, I proceeded to remove the Hard Dis