L This unifying receiver is only compatible with Logitech mouse and keyboard that have a unifying logo. l Keyboard and mouse set: MK710, MK520, MK330, MK365. l Keyboard: K400r, K750, K800, K520, K710, K780, K270 (Unifying version), K230, K340, K350, N305, K340, etc.
eBay