Here’s how you can disassemble laptop and replace or upgrade memory aka RAM in a Toshiba Portege M400 Tablet PC. As you see on the picture below, there is no access to the RAM slots on the bottom of the laptop. Why? Because both RAM slots are hidden under the keyboard.
According to Toshiba specifications a Toshiba Portege M400 Tablet PC can handle up to 4GB memory total. That means you can install up to 2GB memory module into each slot. Toshiba Portege M400 configured with PC2-5300 DDR2 667MHz memory modules.
You can easily upgrade a Portege M400 laptop to 4GB yourself; all you need is a couple of screwdrivers, two 2GB memory modules and 15 minutes of your time.
Before you start turn off the laptop, unplug AC adapter and remove the battery.
Now I’m going to remove the keyboard.
Carefully insert a small flathead screwdriver under the keyboard bezel and lift it up. Continue removing the bezel with fingers.

The keyboard bezel has been removed.

Now remove two screws and release a small plastic latch in the middle.

Lift up the keyboard as it show on the picture and place it upside down on the palm rest.

You’ll find two covers under the keyboard. Both memory modules are hidden under the right cover. Remove two screws and remove the cover.

Both RAM slots are occupied with 512MB memory modules. I’m going to remove both 512MB modules and replace them with two 2GB modules.
Spread latches on both sides with thumbs.

The memory module will pop up at a 30 degree angle.

Carefully pull the memory module by the edges and replace it with a new one. Repeat three last steps with the second memory module.

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March 4th, 2013 at 8:00 am
do u know where the sound card is located? i cant seem to get mine to work in xp
December 7th, 2012 at 1:54 pm
Hi. Found this really good. Only problem is that my model – Toshiba Portege R400 only has one slot. I replaced the existing stick with a 2gb one. System now shows me up to 3gb of RAM now.
Had wanted to increase it to 4gb, is there any way of doing this? If there is only one port, what’s the maximum RAM I can go to?
Thanks. Rob
June 7th, 2012 at 9:15 am
Thank you. Very useful.
August 11th, 2011 at 7:28 am
Thank you, it was a snap.!
April 4th, 2011 at 6:23 am
Thanks a million. just upgraded to 4 GB. Windows 7 was unusable with 1 gig. Will try to make a donation
January 21st, 2011 at 7:47 am
Awesome Presentation with step by step pictures
December 23rd, 2010 at 9:51 am
The only thing that’s worth doing is checking to see that your system recognizes the memory. Assuming you’re running Windows, go to Start->Control Pane->System. It should show you the amount of RAM that you think you have.
October 17th, 2010 at 2:01 pm
This was great, I just bought a used tablet and wanted to upgrade the memory, this link made it so easy to do. Thanks !
September 28th, 2010 at 4:21 am
i was told that mine had 2 * 1Gb on board. Thanks to your description I was able to open the system and see there was only one 2Gb. So I’ve saved buying 2*2Gb and just bought one. Thanks
September 21st, 2010 at 6:29 pm
Thanks for taking the time to do this. It is very much appreciated! You saved me hours of looking for the location of the memory!