Internal removable/upgradable laptop gpus are rare and yours doesn't have one. It's uncommon for people to upgrade laptops, even ssds and ram which is usually all that can be done, and does not happen all the time. If you mean to do an egpu setup, you do have easy access to the mpcie slot the wifi card is using. You should be aware of the downsides of such a setup and could go with any gpu you want because of the bottleneck.