ACOUSTIC REVIVE's RUT-1 USB noise filter, designed to reduce noise from USB ports. I am selling it due to a change in environment. I was using it until recently. Included accessories: original box, instruction manual. Please check the photos for the condition, as there is some wear and tear. - Brand: ACOUSTIC REVIVE - Model Name: RUT-1 - Type: USB Noise Filter - Country of Manufacture: Japan To ensure a smooth transaction, buyers with no transaction history are kindly requested to refrain from purchasing. Thank you for looking.