Logitech USB adapter. This was included with a mouse I used to own, but I'm selling it since I don't need it. [Product Contents] ・Logitech USB Unifying Receiver C-U0007 1 piece Everything in the photos is included. ------------------------------------------ [Condition] Used item. Please judge the appearance from the photos. ------------------------------------------------ [Notes & Other] I am a private seller, so there may be oversights. This is a used item, so please understand and agree to the nature of the product before purchasing.