I have a Logitech V470 Bluetooth and it does not pair with that. It won't matter yours is the 557..
USB Bluetooth dongles are pretty cheap here but I suggest you don't as I found my Bluetooth mouse battery appetite to be why I don't use it. Also it's a bit laggy.
I want to know if I can use a Logitech Unifying USB receiver with my Logitech M557 Bluetooth mouse on a computer that doesn't have Bluetooth?

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