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Something in the back of my mind is telling me that it's actually spec-compliant to send the 6 scancodes in numerical order. Could very well be misremembering though, and most implementations accept near enough anything from an HID device in my experience

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Appendix C: Keyboard Implementation from the Device class definition for HID states "The order of keycodes in array fields has no significance. Order determination is done by the host software comparing the contents of the previous report to the current report. If two or more keys are reported in one report, their order is indeterminate".

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