Installing a second M.2 SSD to MSI Katana 17/15 B13/B12 : r/MSILaptops
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MSI GF66 (12UD) - DISASSEMBLY and UPGRADE OPTIONS - YouTube
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MSI Katana GF76 17.3" Gaming Laptop Intel Core i7-12700H 16GB Memory NVIDIA GeForce RTX 3070 Ti 1TB SSD Black KatanaGF76035 - Best Buy
I have just upgraded my MSI Katana GF66 11UG RAM to 64GB with two of the sticks shown in the image. I checked prior and they are 100% compatible and my laptop
How to Upgrade MSI Katana GF66 (MS-1582) RAM | To Improve Laptop Performance - YouTube