I'm selling my Scarlett 4i4 Gen4, so here's the serial number. Please register the product and use the bundled software. I'm selling it because it didn't suit my needs. I only used it once after purchasing it, and there's a small scratch on the back from that time... Otherwise, there are no noticeable stains or scratches. I will wipe it down before sending it. The box and the Type-C cable are included. 2-in-2-out specification. It's compact at about 600g, and the auto-gain function and direct monitoring function are convenient. I recommend it to those who want to get it a little cheaper. I will put it in a plastic bag and cushioning material before sending it. Please feel free to ask any questions. Thank you very much.