Lenovo Unified Pairing Receiver allows you to pair supported products to a new receiver if the original receiver is lost or to use 1 receiver across several devices. Support products list: Lenovo Go Wireless Split Keyboard (4Y41C337**); Lenovo Go Wireless Vertical Mouse (4Y51C33792); Lenovo Go Wireless Numeric Keypad (4Y41C33791); Lenovo Go USB-C Wireless Mouse (4Y51C21216); Lenovo Go Wireless Multi-Device Mouse (4Y51C21217); ThinkPad USB-C Essential Compact Wireless Mouse ( 4Y51D20848); Lenovo Professional Wireless Rechargeable Combo (4X31K039**); Lenovo Professional Wireless Rechargeable Keyboard (4Y41K040**).