How to Upgrade the RAM on the Lenovo ThinkPad T440s

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The Lenovo ThinkPad T440s is one of the best and most popular productivity notebooks around, for business users or anyone who wants a great keyboard and long battery life. However, if you buy the notebook from Lenovo, it costs a whopping $80 extra to configure it with 8GB of RAM instead of the basic 4GB. Even though there's no easy-access upgrade panel, it's simple enough to add 4 or 8GB of additional RAM to the ThinkPad T440s on your own, if you follow these steps.

Lenovo T440s RAM: What You Need

The Lenovo ThinkPad T440s has 4GB soldered onto the motherboard and an additional SODIMM slot, which is either empty (if you bought with 4GB) or has a chip in it you'll need to remove (if you bought with 8GB and now want 12GB). You must purchase a single 4 or 8GB SODIMM of DDR3, PC3-12800 Unbuffered, Non-ECC RAM that runs at 1.35 volts. While it's easy to find memory chips with these specs, you need to be particularly careful to purchase a chip that runs at 1.35 volts rather than 1.5 volts, as 1.5-volt memory modules only work on earlier laptops.

As of this writing, you can purchase a Crucial brand 4GB SODIMM (Buy from Amazon) or 8GB SODIMM (Buy from Amazon) for $39 and $74 respectively. Adding 4GB to get to 8GB total is probably enough for most users. Before you begin your upgrade,  you'll also need a small Phillip's head screwdriver.

MORE: How to Install an M.2 SSD in the Lenovo ThinkPad T440s 

How to Upgrade the Lenovo T440s' RAM

1.  Enter the BIOS setup by hitting Enter repeatedly as the computer boots up and you see the ThinkPad logo. If Windows loads, restart the computer and try again. You need to be really quick.

ThinkPad Logo

2. Select Power from the Config tab.


3. Select Disable Built-in Battery, hit Enter and Confirm. The T440s will turn off.


Disable Built-in Battery4. Flip the T440s over so the bottom is facing you.

 T440s Bottom

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5. Remove the external battery by pushing the two clips apart and pulling it out.Remove Battery

6. Loosen or remove all 8 screws on the back using a small Phillip's head screwdriver. You may want to pull the screws out because they have a tendency to fall out during work.

t440s screws

7. Pry the bottom off, starting at the upper right corner, circling around counter clockwise and pulling up the bottom, left side and top. You may find that starting at the bottom works better, or that you need a tool such as a flathead screw driver to help with the prying. Be very gentle, and, if you feel resistance, make sure all screws are completely loose. If you pry too hard or use too much force on a section that's not loose, you could break the plastic. 


Pry bottom

8. Locate the DIMM slot and gently peel back the plastic above it. It's on the upper right side of the machine, just below the battery lot and to the left of the fan.T440s DIMM slot

9. Remove the preinstalled SODIMM, if there is one, by pulling the clips apart until it pops up. If your notebook has 4GB of RAM, then it does not have a preinstalled DIMM as the first 4GB are built onto the motherboard.

Remove preinstalled SODIMM

10. Insert the new SODIMM at approximately a 45 degree angle. Make sure the groove on the bottom of the module aligns with the groove on the slot. If not, the module may be upside down. 


11. Push the module down until it snaps in place and the clips rest inside the curves on the side of the chip.

Push RAM in

12. Put the cover back on and tighten all 8 screws. 

 If you're successful, you'll see the new amount of RAM in the system properties menu, which you can reach by hitting Windows + X and selecting System from the menu.System Menu


Author Bio
Avram Piltch
Avram Piltch, LAPTOP Online Editorial Director
The official Geeks Geek, as his weekly column is titled, Avram Piltch has guided the editorial and production of since 2007. With his technical knowledge and passion for testing, Avram programmed several of LAPTOP's real-world benchmarks, including the LAPTOP Battery Test. He holds a master’s degree in English from NYU.
Avram Piltch, LAPTOP Online Editorial Director on
Add a comment
  • Hejsan II Says:

    I have the same problem as David... He said "The 8GB memory board Amazon linked to is not compatible with my T440s". The same happened to me...

  • Lila Hickey Says:

    Why do you disable the battery in BIOS in addition to physically removing it?

  • David Says:

    The 8GB memory board Amazon linked to is not compatible with my T440s, as I discovered after receiving it today.

  • Michael W. Says:

    Thank you for a great instructions. It only took about five minutes to complete this. I just left the screws in. To snap the cover off, I traced around the edges with the small watch flat head screw driver until I found a opening to wedge open, and then I easily worked it open with my thumbnail to snap off the cover, and set it aside with screws still in cover.

  • Neil J Says:

    Bought a 8gb Ram, but discovered the system already has 8Gb installed, so without 4Gb onboard. SO wasted my money. Does this mean it will take 16Gb?

  • NeilJ Says:

    Bought a 8gb Ram, installed it but was only showing 8Gb. Checked the memory I removed and this was also 8Gb, so does NOT have 4Gb on board. So I wasted my money :-(. Can I therefore install 16Gb?

  • velle Says:

    I bought my t440 with 8gb SODIMM , supposedly there is a 4gb soldered memory. But how come I can only see 8GB in windows. And yes, we opened it and found 8GB SODIMM inside.

  • Flemming Says:

    Does the same specs for ram account for the T440?

  • Peter Flynn Says:

    Thanks for the tutorial.

    I'm currently doing this. The screws are simply horrid to get out from the holes. Horrendous upgrade design compared to the flap I had on my older T410. Even removing the keyboard was simpler than this upgrade.

  • Steven Says:

    Not all T440's have built in memory soldered. My version has a 4GB SODIMM so you have to remove and replace with an 8GB. Max is therefore 8GB

  • Lawrence Wiencke Says:

    Your description of how to remove the case is incomplete. Removing that case is really difficult. I'd suggest having several guitar picks on hand rather than screw drivers. Took me about 20 minutes to remove it once the screws were loosened and a lot of patience. Horrendous design relative to the T420s.

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