16G RAM possible

Hello! Yes it it possible,

There should be Phillips or Pentalope screws on the bottom, around 12 of them

Unscrew those and you should see the DIMMs

After that, take your 16gb kit (You can get them form amazon, make sure its mac ram, though)

Take out the old ram and set it somewhere safe, If the ram breaks, you will need a replacement. (Note macs can take mismatched ram) .

Then, screw back on the panel, and if it works, good job! If you hear beeping, then replace one of the dims, 1-by-1, it may just have dust on it, If not, 12g is more then enough.

Your welcome!

To make sure this works, don't buy "just any old RAM." Macs are picky and most senior contributors here recommend Crucial or Other World Computing as RAM vendors. They are the only ones I trust for my Macs, especially when I go beyond what is called out in Apple's out-dated specs.

I would never consider RAM from an auction site--I've seen too many issues with that here in 18 years. Places like Amazon have their products but also other vendors' stuff. I buy a lot of stuff from Amazon but would never buy Mac RAM from there.

Regardless of where you get it, use good instructions. Those provides=d above leave out an important step: disconnect the battery cable from the logic board before removing or installing RAM. I like OWC's instructional videos:

https://eshop.macsales.com/installvideos/macbookpro_13_unibody_mid12_mem/

Yes

This what the memory expansion information for 1 model looks like.

Howard

You should be able to verify that here.

http://www.mactracker.com

You can also download the free MacTracker app for your computer or mobile phone.

This is what the app looks like.

Howard

One last note. Pay attention to the shape of the machine. There is a slight curve on the bottom. Those screws go in at a very slight angle, not straight down.