How-To Geek

leonardjonesjonesbtinternet hi,
You should be able to go into your BIOS to verify your increase in memory. If it doesn't you need to go to your mobo website to see if there is a newer BIOS upgrade and what the upgrade included. Most have a short explanation of what the upgrade does.
While your there download the owners manual and read the section on memory. See what the limitations are. Some won't work.

Easier yet, go to CRUCIAL'S SITE and run the memory advisor, it will details what and how much you can upgrade too.

Of course, if you are not running a 64 bit version of an OS you can't even use more than 3GB's anyway.

Irv S.

Leonard, according to crucial for a Acer Aspire z5610 you can use this:

Memory:
DDR3 PC3-10600
Memory Type: DDR3 PC3-10600, DDR3 (non-ECC)
Maximum Memory: 8GB
Slots: 4
Each memory slot can hold DDR3 PC3-10600 with a maximum of 2GB per slot.*

So in general, your motherboard has 4 slots, each slot can handle 2GB's of memory max which will total 8GB. By having a 64 bit OS, which you do, your PC will recognize the full 8GB of memory. There is no way to increase this by doing a BIOS update or anything along those lines. The only way to get a larger amount, is by having a new motherboard. But with it being a store bought/All in One pc, that would not be cost effective.

For most day to day activities, and some moderate usage such as gaming/video editing etc, 8GB should be perfectly fine.