Logitech Dongle Replacement
1PC USB Receivers For Logitech MK270/260 MK250 Nano MK345 MK2 MK235 Keyboard Mouse USB Receiver Replacement USB Receivers New US $5 GenuineLogitech PartIf your headset and receiver lose pairing or you have a replacement receiver and need to repair, do the following Download the Logitech Unifying Software at wwwlogicom/support/unifying