◾️Thank you for viewing. I recently purchased this on Mercari. I bought it from an individual seller with zero "disappointing" ratings who sells many music-related items. The seller stated that the item's operation had been confirmed, but it didn't work properly on my PC (Mac Sequoia), possibly due to an OS issue. Therefore, I'm offering it to someone who can use it. I have confirmed that it powers on. ◾️Please understand that this is a used item. Please refrain from bidding if you are seeking a perfect condition item or are overly concerned about minor details. Please understand that this item has been stored by an individual. No claims and no returns are accepted. ◾️Instant purchase is welcome. ◾️This is a controller for the DJ software Traktor. No adapter is needed; it can be used simply by connecting it to a PC via USB. I will include the USB cable for PC connection. You can play with almost the same feel as a PCDJ, with PLAY, CUE, SYNC, and various effects. The box and instruction manual are not included. Brand: Native Instruments Model Name: TRAKTOR KONTROL X1