Original Logitech USB Receiver for Logitech Cordless Desktop Wave Pro M/n. Y-rbn90 (Keyboard), M-rcr147r (Mouse) Brand New Original Logitech Receiver (993-000250) M/N C-UBE35 for Logitech Cordless Desktop Wave Pro Logitech Receiver M/N C-UBE35, P/N (820-001531) Wave Pro, WW 2.4GHZ This Receiver will work Only With M/N. Y-RBN90 (Keyboard), M-RCR147R (Mouse) The part number on the bottom of the keyboard must match this number 820-001633