The Lenovo 2.4G Wireless USB Receiver is the perfect and cost-efficient replacement for a lost Lenovo Professional Mouse, Keyboard or Combo USB receiver. Easy to pair with supported devices, just press the pairing button and the mouse or keyboard is usable within seconds.<br><br>Compatible with:<br>Lenovo Professional Wireless Keyboard & Mouse Combo (4X30H56796)<br>Lenovo Professional Wireless Keyboard (4X30H56841)<br>Lenovo Professional Wireless Laser Mouse (4X30H56886)