There are also devices (like for example Logitech's DiNovo mini that I own) that:
- they are bluetooth devices that can be used just fine from any bluetooth enabled device... OR
- they have a dongle supplied that has bluetooth communication with the DiNovo BUT dongle acts like a normal HID device alas it can be used from even the BIOS of a PC or any other device that supports USB HID devices (like Poseidon does).