The Verbatim Ultra HD 4K External Slimline Blu-ray Writer (Model 43888) is generally compatible with MacBooks, including the MacBook Pro M3/2024, provided the operating system and hardware requirements are met.

### Compatibility
- The drive uses USB 3.0 and USB-C, which is compatible with most modern MacBooks.

### Software
- The drive comes with the Nero Burn & Archive software, but it can also work without additional software, as macOS offers its own burning functions. However, the included software may be useful for advanced burning functions.

### Operating system
- It should be compatible with macOS 15 Sequoia as there are no specific restrictions for this version of the operating system.

To summarise: The Verbatim Ultra HD 4K External Slimline Blu-ray Writer should work fine with your MacBook Pro M3/2024 and macOS 15 Sequoia without the need for additional software, unless you require special burning features provided by the included Nero software.