forked from drath/libratbag
The device enumerates as usb 0b05:1ad7 behind the Omni receiver (0b05:1ace). The signature prefix 20, OmniSignature=20, resolves to this file during probe. Verified on hardware: 5 profiles, 8 buttons, 1 LED, DPI presets 400/800/1600/3200, report rate 1000 Hz, debounce 12 ms, LED brightness 127 (50%).