Hi, the white one is an USB cable which connects the MiniLab with your computer. The black one is for a sustain pedal. If you press it after hitting a key on your MiniLab the note will sustain even if you don't hit the key anymore. It's similar to one of those pedals built in to a real piano. It's this one right here (affiliate link which supports me if you buy it there): thmn.to/thoprod/195659?offid=1&affid=2782 Check out my RU-vid tutorial for more information: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE--OK61HxX68I.html Hope it helps. Greetings and love from Germany!
Hi, I'm not quite sure if I got your question correctly but check out my tutorial videos on how to live loop in Ableton (ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE--OK61HxX68I.html) and quantizing loops during recording (ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Id2mAfVVSDY.htmlfeature=shared). It may be helpful :) Greetings and love from Germany