When you launch the browser, you will be prompted to import your browsing history, bookmarks, and search engine settings from Google Chrome or Microsoft Edge. The browser even offers to add Chromium extensions — including from the Chrome store — but the first users complain Samsung Internet comes to Windows PCs, and you can download it now / Android Central that the function is not working correctly yet and it is not possible to install extensions.
You can also sync the browser with the mobile version — just log in to your Samsung account. But this way you will only be able to transfer the same settings as when switching from Chrome and Edge: you will not be able to synchronize saved passwords.
Otherwise, the browser is pretty standard: there is an incognito mode, dark and light themes, and ad blocking support. It also gives users the ability to delete all bookmarks, passwords, browsing history and other data after logging out of their account — a useful feature if several people use the same computer.