[SOLVED] Can I upgrade the RAM in any/all of these 4 laptops?

Solution
Go to a ram web site like Kingston or crucial and access their ram upgrade app.
Enter the make/model of the laptop and you will get a list of supported ram upgrades.

Another option is to google the laptop name along with ram upgrade.
If an upgrade is available, you may see a video of how to do it.

There are several variations of the lenovo 130s, some of which I do not think can be upgraded.
Go to a ram web site like Kingston or crucial and access their ram upgrade app.
Enter the make/model of the laptop and you will get a list of supported ram upgrades.

Another option is to google the laptop name along with ram upgrade.
If an upgrade is available, you may see a video of how to do it.

There are several variations of the lenovo 130s, some of which I do not think can be upgraded.
 
Solution
Aug 20, 2019
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Go to a ram web site like Kingston or crucial and access their ram upgrade app.
Enter the make/model of the laptop and you will get a list of supported ram upgrades.

Another option is to google the laptop name along with ram upgrade.
If an upgrade is available, you may see a video of how to do it.

There are several variations of the lenovo 130s, some of which I do not think can be upgraded.
Thank you, this was very helpful.