Hey again, luislast. The memory cannot be upgraded, as it is soldered to the systemboard. Regarding storage, there is not a second storage slot, but you can switch out the existing drive, up to 1TB, M.2 2280 (it could handle more, but this is the maximum capacity used during testing).

Hey, Bonnev659. The memory cannot be upgraded, as it is soldered to the systemboard, and there is not a second storage slot, so you would have to swap out the existing M.2 for another (up to M.2 2280).

Hey, thank you for your question. To clarify, while this IdeaPad was not designed for gaming, you could game on it depending on the system requirements of the games you like to play. Some games are very conservative when it comes to power requirements, while others may need a dedicated graphics card and double the memory and processing speeds. We recommend reviewing the system requirements of the games you'd like to play, then compare them to the specs and features of any computer to help choose what would be a good fit for you. You can also post what games you wish to play in the Q&A of whatever item you're interested in, and we can help you further.

Hey, thank you for your question. It could work great for your sister, but it also depends on a couple things. First, depending on the games your sister wishes to play, they may not be available in the app store that this Tab uses. The M9 uses Android as its operating system which consequently it uses the Google Play Store as the default app store while Amazon Fire tablets have a proprietary app store. Also, if your sister is looking for quicker processing speeds, the Tab M11 (https://www.bestbuy.com/site/lenovo-tab-m11-11-tablet-64gb-storm-grey/6572176.p?skuId=6572176) could also be work a look.