Heya @magrega - when wired there is no shutdown packet that I’m remembering. Wirelessly (Bluetooth attached for mobile and Mac - on windows could be custom wireless) the GIP command is 0x08 0x02 0x00 (system command, power off, padding/reserved). The chromium sources and the Linux xbox-gip-driver sources are your best options for public documentation.

@jimmyjamesuk @tedmielczarek yep Switch Pro controllers and wired Xbox controllers should both be a-working now.

Human Interface Guidelines for Games on Apple Platforms - https://developer.apple.com/design/human-interface-guidelines/designing-for-games. This is an awesome new starting point for our recommended best-practices in user-experience. Don't miss the associated talk, https://developer.apple.com/videos/play/wwdc2024/10085/

@jimmyjamesuk hmmm give it a try and let me know :)

Wired Xbox Controllers - speaking of low-latency game input, one of the most-requested features for Xbox fans is here - use your Xbox controller on macOS, iOS, and iPadOS with a wire. (Hey, how was that any different from other wired controllers? Xbox uses a custom fast USB protocol called GIP instead of the USB-HID standard. But now you don’t have to care.)

Game Mode on iOS - maximizes gameplay performance by minimizing background activity, while dramatically reducing input and audio latency. https://www.macrumors.com/2024/06/13/ios-18-game-mode-faster-iphone/

Game Porting Toolkit 2 - https://developer.apple.com/games/game-porting-toolkit/ with improvements to instruction and graphics API emulation (hello, ray tracing!), more games run, and they run faster and with more accuracy. This year even more tools and dedicated sample code based on your feedback about what makes writing and porting high-end games easier.