Keyboard: K800 K750 K520 K350 K340 K320 K305 K270 K230. Mouse: M950 M905 M705 M545 M525 M515 M510 M505 M345 M310 M185. Note！One Nano Receiver can only be equipped with one device, Non-Unifying！. How to use the USB receiver？ When you receive the new receiver, you must pair the new receiver to your mouse.
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