4K wireless dongle made by Pulsar, ideal for compatible mice. - Model: 4K Wireless Dongle - Compatibility: Compatible with Pulsar Mice - Brand: pulsar - Design: Compact and easy to carry Thank you for viewing. I purchased this at Tsukumo in Akihabara and used it. I am selling it because I no longer need it due to a change in equipment. Operation has been confirmed with Xlite V3. You need to download a dedicated file to use it. You can download it from the official website. Regarding the procedure, there are people who have uploaded videos on YouTube, so you can search for "pulsar 4K dongle". There are no major scratches on the main unit, but there are small scratches and scratches/folds on the outer box due to use. Please check the images. We recommend purchasing a new one for those who are concerned about minor imperfections. Returns are not accepted to prevent replacement. Thank you for your understanding. All accessories are included.