After showing you how to open an Apple Mac mini, now I try to install additional RAM into an ACER Power 1000 Series Desktop PC. Here it is, ACER Power 1000 still closed with standard 512MB RAM:

Then, turn it around and start to remove the first screw on the back. Note that you will void the warranty breaking the ACER Warranty Seal! I’m not responsible for that, you’ve been warned.

Remove the top panel (it slides).

Ok, now use your screwdriver once again to remove the second (and last) screw. It’s the black one (second picture below).

Now, you can gently but firmly remove the tray with the DVD and the hard disk.

You can install up to two so-DIMM DDR2 533MHz RAM banks

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