Ray has a Toshiba Equium M40X-189 notebook. In spite of being an old model, it had been doing the work it was supposed to do very well except for the lack of memory, which was only 512M (standard).
So last week I decided to upgrade the ram. The first step was to figure out which was the maximum memory expandability for the laptop. It was pretty easy to find out that it was 2,048 MB. We then bought two 1Gb IBM memories (1024MB DDR SODIMM 333MHz PC2700 200pin 2.5v).
You can see the upgrade procedure, step by step below:
1. Wrap an anti static strap around the wrist and connect it to the earth plug.
2. Remove all cables connected to the computer.
3. Turn the computer upside down and remove the battery.

Removing Toshiba battery.
5. Slide your fingernail or a thin object under the cover and lift it off.
6. Fit the module’s connectors into the computer’s connectors at about a 45 degree angle and press the module carefully to ensure a firm connection.

Image from Toshiba's manual - Placing ram.

1Gb ram placed in the slot located underneath the laptop.
When I opened the ram memory compartment to place the first 1Gb, there was only one single slot and the standard 512M memory was not even near that place. Because some TOSHIBA models have the other memory slot underneath the keyboard, I decided to remove it and have a good look. After doing this all I found was the wireless Lan unit and its antennas. To my disappointment, there was no sign of 512M under the keyboard. 🙁

No sign of standard 512M memory underneath the keyboard.
Now it comes the shocking part, the guy answered that it shows 2Gb because ‘you are supposed to place a 1.5Gb memory’ in the free slot underneath the notebook. Whaaa? 1.5Gb memory? Where is it sold ? I thought memories came in 128M, 256M, 512M, 1Gb, 2Gb modules. Holy cow! Where can I buy a 1.5Gb memory module?
Having said all this, we have a spare 1Gb IBM memory looking for its place in the world 😀 and I have two simple questions:
Is it possible to remove the standard memory from the Toshiba Equium M40X-189 and replace it?
Does any good soul know where the standard 512M module is located in the Toshiba Equium M40X-189 ?
I’d love to have an answer. 🙂
Update (16/10/08)
Finally we had an answer from TOSHIBA.
A member of Toshiba’s customer service team, who was exceedingly helpful, provided us with the following informations about Toshiba Equium M40X-189:
- The standard 512M module located in the Toshiba Equium M40X-189 is removable.
- It can be found under the keyboard underneath the wireless card slightly on the right hand side.
- In order to gain access to the standard 512M memory module the laptop must be completely split in two.
- Toshiba cannot supply the end user with drawings or service manuals.
I didn’t have enough courage to split the laptop without at least having a diagram, so we decided to give back the spare 1Gb IBM memory module and ask to be refunded.
Our conclusion? What a stupid place to locate an upgradable memory!
Update (27/02/09)
Good news from a reader called KCM. He has changed the original ram in his Toshiba laptop and he advised us as follows:
It is no problem though to replace the original 512MB RAM. Just follow the instructions on the following web page, and it is almost as easy as updating the memory.. A non hardcore hardware guy like me can change it, so others will also be able.. :0)
http://www.irisvista.com/tech/laptops/ToshibaM35X/satM35X_1.htm
I personally don’t have the courage to split my partner’s laptop in two, but if you want to have a go this link is very useful.
Well done KCM! 😀

@Tim You are welcome
Yes Martin you are so right.It’s not worth it to try installing the 2nd Gigabyte so I’m returning it for a refund. Thanks for writing the article.
Thanks for your quick reply monica……
@sanjeev kishnani, I added 1Gb to 512M (standard) and now we have a Toshiba Equium M40X-189 with 1.5Gb Ram, it’s faster than before and it’s working very well.
Thanks for your quick reply…can u tell me that if i add 1gb with this laptop and it will be 1.5gb, there will be no problem with laptop?….
@sanjeev kishnani Unfortunately not. We sent the 1 Gb ram back to memorystock.com following their instructions. We asked for a refund which has never been done.
We ended without the 1Gb ram and US$79.95 + shipping loss 🙁
Two thumbs down to memorystock.com.
Thanks for visiting the blog 🙂
monica do u still have 1gb ram?as i need to upgrade my toshiba 40x-189
@Jack thanks for your comment. It’s good for the soul to hear that 🙂
HI there
thanks for this post, it is very well written and very helpful !!!
Cheers from Ireland.
@KCM Wow! The link you put in your comment is very good and useful, I’m even updating this post! I know it is a time of “Yes you can!” but I’m not brave enough to split the laptop in two, and to make the thing more complicated, I don’t play guitar 😀
Thanks for this good advice! It helped me a lot.
It is no problem though to replace the original 512MB RAM. Just follow the instructions on the following web page, and it is almost as easy as updating the memory.. A non hardcore hardware guy like me can change it, so others will also be able.. :0)
http://www.irisvista.com/tech/laptops/ToshibaM35X/satM35X_1.htm
@Martin I am glad that this post was helpful. Although we still haven’t received the refund for the extra 1Gb memory we bought from memorystock.com 🙁
Thanks for posting this I just upgraded my m40x to 1.5gig and i was going to get another chip and do the internal one
Obviously i wont be bothering having read your article..
all said tho that one gig has made a hell of a difference
Very helpful thank you
Olá Mônica,
só mesmo pedindo “ajuda aos universitários” hahaha.
Too difficult!