Adding memory to a a75-s211

your computer can be upgrade up to 1.5 gigabytes of ram with a PC2700 memory specifcation compliance.

I have checked the Compaq Presario CQ60-215DX Specification It Originally has 2GB Memory and supports upto 4GB RAM max. If you intend to upgrade the RAM, you can buy additional RAM and put them in you system. Here is the HP Guide to Replace RAM and How to Upgrade RAM Guide
Compaq Presario CQ60-215DX has two RAM slots for DDR-2 (533 or 667) Memory Modules. First you have to check that the RAM slot is available for additional RAM. I believe that it has two modules of 1GB each in both slots. So, you have to get two modules of RAM 2GB each to upgrade to 4GB (or one 2GB RAM module to upgrade to 3GB). Hence, it is recommended that you get 2GB replacement module for each 1GB module you have on you system from local laptop repair/ service center, which would be cost effective as existing 1GB RAM Modules would be useless for you upon upgrade.

Let me know if any further clarification/ assistance is required.

Good Luck!
Appreciate generously, if the solution could have been of any help!
CreativeTECH

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That notebook has internal 512K and one slot only (empty at this time)into which you can put a maximum of 1Gb for a total of 1.5Gb.
Go to crucial.com

Below are the specs to the type of memory that can be installed in the A75...it is very specific and cannot be anything else then what is listed. You have 512 mb built onto the motherboard, with one expansion slot. That slot can only hold up to 1 gb stick if the BIOS has been upgraded. Go to Toshiba support and make sure the BIOS on the machine is up to date so it will accept the larger stick of ram memory and make sure all the specs are right on the stick that you have.

Each memory slot can hold DDR PC2700 with a maximum of 1GB per slot.*

Maximum Memory: 1536MB

Slots: 1 (1 bank of 1)

Standard Memory: 512, 768, or 1024MB (512MB non-removable)

USB Support: 2.x Compliant

The RAM memory slot is up on battery .
First open cover above battery plate then fix RAM there .

I'm showing a base memory on that unit of 256 so your max upgrade is 1gb to 1.2gb total.

1GB (1x1GB) Toshiba Notebook 2.5v PC2700 DDR333 SODIMM

noway max is max. buy yourself a 1gb and don't try to beat the system or lose it.

you buy the memory here for a great price or anywhere online instructions are on the page
it replaces the 512
http://cgi.ebay.com/1GB-DDR-333-for-Toshiba-Satellite-A75-S211-Memory-RAM_W0QQitemZ250353026446QQihZ015QQcategoryZ158897QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

Memory Card for Toshiba Satellite A75-S211 Memory RAM- Designed and Optimized

Toshiba Satellite A75-S211 Memory RAM Memory Upgrade -Easily installed

More Memory Equals - More Speed for your APPS

The Toshiba Satellite A75-S211 Memory RAM has a memory card slot or slots, that allows you to add more memory to your Toshiba Satellite A75-S211 Memory RAM, giving you enhanced performance and speed. You will see the Immediate speed increase in your computers performance.
Stop waiting for programs, and functions to happen, STOP WAITING!!! Start enjoying technology as you should.
We work directly with our memory card manufacturer to insure perfect compatibility with the Toshiba Satellite A75-S211 Memory RAM. Only using the highest quality memory chipsets for our memory cards, so you are assured compatibility and performance. All of our memory cards are Designed and Optimized for Toshiba Satellite A75-S211 Memory RAM . Technical specialists have personally verified our memory cards compatibility with the Toshiba Satellite A75-S211 Memory RAM.
Worry Free Installation: Just Follow these Steps Desktop and Laptop instructions below.
Desktops

1. Unplug Power cable
2. Remove Case
3. Slide memory card in Open slots- the memory card will only fit in one way
4. Snap the side clips in place
5. Close Case and Power Up
6. You are ready to go.

Laptop

1. unplug and remove Battery from laptop
2. Open memory compartment on bottom using Philips screw driver
3. inset memory in open slot, if no open slot remove current memory by pinching metal clasp on side of memory
4. Close compartment and power up you are off and running.

i have the same Compaq Evo N400c its a ram under the keyboard check there to upgrade it i got Compaq Evo N400c 1gb ram