1. Display: A high-quality display, likely an AMOLED or similar technology, with vibrant colors, high resolution, and deep blacks.
2. Storage: 512GB of internal storage for apps, media, and files.
3. RAM: 12GB of RAM for smooth multitasking and improved app performance.
4. Processor: A powerful processor suitable for a premium tablet experience.
5. Operating System: Android OS with Samsung’s custom user interface, optimized for tablets.
6. Camera: High-quality front and rear cameras for photography, video calls, and scanning.
7. Battery: A battery with sufficient capacity for extended use, with optimizations for energy efficiency.
8. Connectivity: Wi-Fi and possibly cellular connectivity, depending on the model.
9. Design: A sleek and premium design, possibly featuring slim bezels and a durable build.
10. Audio: Enhanced audio features, potentially with stereo speakers and support for high-quality audio formats.
11. Security: Biometric security features such as fingerprint recognition or facial recognition.
12. Expandable Storage: Support for microSD cards to expand storage further.
13. USB Connectivity: USB Type-C port for charging and data transfer.

Please note that the « Tab S9 Ultra » designation is not a standard term, and without more context or the latest information, it’s challenging to provide specific details about its meaning in the context of this tablet model. For the most accurate and up-to-date information about the Samsung Galaxy Tab S9 Ultra 12GB + 512GB (SM-X916BZAEMWD), I recommend checking the official Samsung website, contacting Samsung customer support, or referring to reputable retailers and online stores. They should have the latest details on the tablet’s specifications, features, and availability.